Field 1
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The following pages are a field by field description of the screen generated reports produced by the MASCOT System. The format used is that of a chart outlining certain characteristics about each field that appears on the MASCOT products. The actual products (samples) are attached at the end of this section (Figures 1-6) and are referenced by the Field number. For example, Field 2 on the chart is 'GCM #'. It appears on all the products and therefore the "On Products" item on the chart for Field 2 shows an "x" against each of the five products. Thus, all the products (Figures 1-6) show the GCM # and this is indicated as 2 where the GCM # appears on these products. If an "x" is not marked on the chart against a particular product, then that product does not contain the field in question. For example, Field 3 (which is Tablet Markings) shows an "x" against ID card, Preliminary ID Card, Multiple Listing, and ISA Certificate, but not against Index. This means that Tablet Marking is not contained in the Index product (Figures 5 and 6).
The charts also show "Associated Fields" and "Examples" for each field. Associated Fields are those fields that either this field depends on, or it is those fields that help clarify the intent for the field in question. "Examples" refer to actual sample value(s) for this field, i.e. as they may appear on the actual product(s).
Field 1 |
MASCOT DSS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Form number for the MASCOT products. 'DSS-1' refers to a Final ID Card; ' DSS-2' refers to a Preliminary ID Card; 'DSS-3' refers to a digital format Multiple Listing; and 'DSS-4' refers to a hardcopy format Multiple Listing. The ISA Certificate does not have a form number. |
| Associated Fields | |
| Examples | MASCOT DSS-1, 'MASCOT DSS-3' |
Field 2 |
GCM # |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | A unique sequential number, from 1 to 999,999, with a check digit at the end, from 0 to 9, to uniquely identify a Geodetic Control Marker (GCM). This sequential number is randomly assigned as to physical location in and around the province of British Columbia. For the purposes of public users of MASCOT, a GCM is that mark, other than a monument used to mark a boundary, corner or line, set in the ground whose co-ordinate position is confirmed by the Director of Surveys. It is important to note that the GCM # may not be changed for the life of the physical marker, i.e. it is permanently associated with a given marker. |
| Associated Fields | |
| Examples | 65607, 650929, 380, 18, (lowest = 18; highest = 9999996. |
Field 3 |
Tablet Markings |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Name of the GCM as stamped on the cap in the field. Under the MASCOT
system, new markers will continue to be marked with a seven digit CSDB
Identifier of the form "yyHxxxx" where "yy" is the year of
installation and "xxxx" is a four digit number. It is important
to note that tablet markings are not unique in the field for
historical reasons. As attribute data, tablet markings
(in the database) may change through reports from
the field or otherwise (e.g., data entry mistake). A value of "NO
MARKING" is used to indicate that the marker is known to have no tablet
markings. A blank value indicates that the tablet markings (if any)
is unknown.
See the EXAMPLES section below for a list of special cases. |
| Associated Fields | |
| Examples | 77H6940; 3915; NO MARKING; '' PIER 5 (used to indicate a pillar on an EDM Baseline or GPS Basenet). 'PILLAR' (any concrete pier not part of a baseline). 'LEGAL' (a British Columbia Legal Monument with blank or unknown marking). 'LEGAL 123' (a British Columbia Legal Monument with known tablet marking, in this case '123') ' |
Field 4 |
Mapsheet Name |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Name of the mapsheet. For rural markers, consists of the letters 'NTS' followed by the NTS (National Topographic Series) map name as shown on the Survey Control Index. Rural markers which fall in the United States have a mapsheet name of 'USA' followed by the NTS map name of a nearby NTS mapsheet. For urban markers, refers to the name of the resident municipality, as shown on the Survey Control Index,followed by the 1:5000 BCGS Mapsheet Number the marker falls in. It is important to note that there is a one to one correspondence between the Mapsheet Name and the Survey Control Index. Thus, each marker having a certain Mapsheet Name will only appear on the particular Survey Control Index bearing the same name. If a Survey Control Index map name changes, then a corresponding change to this Mapsheet Name field will be made. |
| Associated Fields | 'Mapsheet No.' |
| Examples | 'NTS VANCOUVER' (rural), 'USA FERNIE' (rural), 'VANCOUVER 92G.026' (urban). |
Field 5 |
Mapsheet No. |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Number associated with Mapsheet Name. For both urban and rural markers, refers to the 1:5000 BCGS (British Columbia Geographic System) Mapsheet Number. On the Rural Multiple Listing report, only the 1:250,000 BCGS Mapsheet Number is displayed. |
| Associated Fields | 'Mapsheet Name' |
| Examples | '92G.026.4.4', '103B.042.3.2', '92G' (Rural Multiple Listing only). |
Field 6 |
Municipality |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The Number and Name of the Municipality the marker appears in. Within MASCOT, Municipalities are defined by a polygon which corresponds, as closely as possible, to the official Municipal Boundary. As of 1996-March-25, only 10 municipalities have boundaries defined within MASCOT. As a temporary measure, any markers which appear in undefined municipalities will have Municipality Number and Name set equal to ISA Number and Name. See field 72 of this document for a description of the ISA Number and Name fields. |
| Associated Fields | |
| Examples | '#14-COQUITLAM'. |
Field 7 |
Marker Condition |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Physical condition of the marker and date associated with the latest field report attesting to this condition. At a particular time in the marker's history it may be printed on the ID Card as "GOOD' (physically okay), " SEE BELOW" (refer to CURRENT/HISTORICAL MARKER CONDITION COMMENTS and/or MARKER LOCATION text), or 'DESTROYED' (deemed unusable as a GCM). Because of historical data problems, some of the markers may lack a condition date. The Multiple Listing product uses the terms "GOOD", "ANOMALY", and "DESTR." The ISA Certificate identifies destroyed markers with the phrase "MARKER DESTROYED", but gives no indication of marker condition if the marker is disturbed. |
| Associated Fields | |
| Examples | 'GOOD', 'SEE BELOW', 'DESTROYED'. |
Field 8 |
Latitude |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Geographic Latitude of the GCM in degrees, minutes and seconds (i.e., DD MM SS.SSSSS), followed by the Standard Deviation in metres. Note that the Standard Deviation does not appear on the Multiple Listing product. |
| Associated Fields | 'Horz Class', 'Datum' and 'Date'. |
| Examples | 49 17 25.65938 dms +/- 0.020 m.', '49 17 25.65938' (Multiple Listing). |
Field 9 |
Longitude |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Geographic longitude of the GCM in degrees, minutes and seconds (i.e., DDD MM SS.SSSSS), followed by the Standard Deviation in metres. Note that the Standard Deviation does not appear on the Multiple Listing product. |
| Associated Fields | 'Horz Class', 'Datum' and 'Date'. |
| Examples | '122 48 59.28422 dms +/- 0.023 m.', '122 48 59.28422' (Multiple Listing) |
Field 10 |
Horz Class |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Contains the integration status for the published coordinates. The integration status reflects the strength of the marker's integration with respect to surrounding control and the provincial survey control system in general. As such it may be 'INTEGRATED' (consistent with the provincial survey control system), 'NOT INTEGRATED' (inconsistent with the provincial Survey Control System), 'PRELIMINARY' (pending adoption by the Director of Surveys), 'PROVISIONAL' (external agency coordinates, not verified), 'CONSULT AGENCY' (contact the Director of Surveys for special circumstance), or ' ' (blank; refer to CURRENT MARKER CLASSIFICATION COMMENTS and/or MARKER LOCATION text). |
| Associated Fields | 'Latitude', 'Longitude', 'Datum' and 'Date' |
| Examples | 'INTEGRATED', 'NOT INTEGRATED', 'PRELIMINARY', 'CONSULT AGENCY' |
Field 11 |
Datum |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Name of geodetic datum to which the horizontal coordinates (latitude, longitude) or the Elevation is referred, as the case may be. Currently, the valid datums are the 1983 North American Datum (NAD 83) - based on the GRS80 ellipsoid (geocentric) - for the horizontal coordinates and the 1928 Canadian Vertical Datum (CVD28) for the Elevations. |
| Associated Fields | 'Latitude', 'Longitude', 'Horz Class', 'Date', 'Vert Class', 'Elevation'. |
| Examples | 'NAD83', 'CVD28'. |
Field 11a |
Date |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Date of publication of horizontal coordinates (latitude, longitude) or Elevation, as the case may be. |
| Associated Fields | 'Latitude', 'Longitude', 'Horz Class', 'Vert Class', 'Elevation', 'Datum' |
| Examples | '93-11-03' ("November 3, 1993"). |
Field 12 |
Coordinate Comment (no heading) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | A comment which refers the user of the Final ID Card to a Preliminary ID Card or vice versa. This comment appears only if a marker has published coordin ates and newer coordinates pending adoption. |
| Associated Fields | |
| Examples | On Preliminary Id Card: 'See Final ID Card for existing coords, elev' 'Note: See Final ID Card for existing coords' 'Note: See Final ID Card for existing elev' On Final ID Card: 'Note: New coords, elevation pending adoption' 'Note: New coordinates pending adoption' 'Note: New elevation pending adoption' On Multiple Listing: Any of the above six comments. |
Field 13 |
Elevation |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Height of the marker above mean sea level, in metres. Elevation, H=h-N (ellipsoid height - geoid undulation). |
| Associated Fields | 'Vert Class', 'Datum', and 'Date'. |
| Examples | 1572.396 Metres' |
Field 14 |
Vert Class |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Contains the integration status and the method of vertical survey
for the published elevation. The integration status reflects the
strength of the marker's integration with respect to surrounding
control and the provincial system in general. As such it may be
'INTEGRATED' (consistent with the provincial survey control system), 'NOT
INTEGRATED' (inconsistent with the provincial survey control system),
'PRELIMINARY' (pending adoption by the Director of Surveys),
'PROVISIONAL' (external agency elevation, not verified), 'CONSULT AGENCY'
(contact the Director of Surveys for special circumstance), or ' '
(blank; refer to CURRENT MARKER CLASSIFICATION COMMENTS and/or \MARKER
LOCATION text). The method of vertical survey may be 'SPIRIT LEVELS',
'ISS' (Inertial Survey System), 'SIMUL TRIG LEV' (Simultaneous
Trigonometric Levels), 'NON-SIMUL TRIG' (Non-Simultaneous Trigonometric
Levels), 'BAROM. LEVELS' (Barometric Levels), 'RADAR ALTI.' (Radar
Altimetry), 'DOPPLER SAT.' (Doppler Satellite), 'GPS SAT. POS.' (Global
Positioning System Satellite Positioning), 'INTERP CONTOUR' (Interpolated
from Contour Map), and 'CONSULT AGENCY'.
On the Multiple Listing Product, only the survey method and not the integration status is printed. The survey method is abbreviated as follows: 'APPROX' (Interpolated from Contour Map or otherwise estimated), 'SPIRIT' (Spirit Levels), 'ISS' (Inertial Survey System), 'SIMUL' (Simultaneous Trigonometric Levels), 'NON-SI' (Non-Simultaneous Trigonometric Levels), 'BAROM.' (Barometric Levels), 'RADAR' (Radar Altimetry), 'DOPPLE' (Doppler Satellite), 'GPS SA' (GPS Satellite), and 'CONSUL' (Consult Agency). On the ISA Certificate, only the integration status and not the survey method is printed. If no integration status is printed, then by default the marker is' INTEGRATED'. |
| Associated Fields | 'Elevation', 'Datum', 'Date' |
| Examples | 'INTEGRATED, SPIRIT LEVELS', 'PROVISIONAL, ISS'. |
Field 15 |
Date of Marker Installation |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Year and month in which the marker was installed. For many historical markers the installation date should be considered to be an estimate only since the reported and actual dates may differ by one or more years. For most historical markers, a value of '01' (January) has been stored if the actual month of installation was not known. |
| Associated Fields | |
| Examples | 72-03' (March, 1972). |
AAA
Field 16 |
Date of this Printing |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Year, month and day on which the information was accessed from the database and printed on the report (hardcopy or digital form). |
| Associated Fields | 'For more current information, call Geodetic Control'. |
| Examples | '93-12-15' (December 15, 1993) |
Field 17 |
Date of last update |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Year, month and day on which the last update to the database was made with respect to the particular marker. For new markers, i.e. those being published for the first time, this date is the same as the Director Of Surveys Confirmation Date (see MARKER HISTORY). For an existing marker, this date is the same as either (1) the latest coordinate revision date (see COORDINATE REVISIONS), (2) the latest non-coordinate revision date (see NON-COORDINATE REVISIONS), (3) the latest marker condition date (see CURRENT MARKER CONDITION COMMENTS), or (4) date of last update of survey connections (see SURVEY CONNECTIONS). This date helps monitor changes to the information pertaining to a marker and identifies the type of changes occurring. |
| Associated Fields | 'MARKER HISTORY', 'COORDINATE REVISIONS', 'NON-COORDINATE REVISIONS', 'CURRENT/HISTORICAL MARKER CONDITION COMMEN TS', 'SURVEY CONNECTIONS DATE OF LAST UPDATE' |
| Examples | '93-12-17' (December 12, 1993). |
Field 18 |
For more current information call Geodetic Control |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Telephone number which can be called to obtain latest information and help regarding the marker. Refers to the dynamic nature of the GSC Marker Information. Users are thereby reminded to bear in mind that the information accessed is only as good as the date of printing (see 'Date of this printing'). |
| Associated Fields | Date of this printing' |
| Examples | '(250) 952-6570'. |
Field 19 |
Note: The standard deviations are relative to ... |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | A descriptive comment that reminds users of two main points: (1) all coordinates are relative to the VLBI markers, and (2) all coordinate values are subject to change due to the reasons given. |
| Associated Fields | |
| Examples | N/A (heading only). |
Field 20 |
TRANSVERSE MERCATOR COORDINATES (UTM) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Indicates that the UTM conformal map projection is used to depict survey control information. |
| Associated Fields | |
| Examples | N/A (heading only). |
Field 21 |
Scale Factor |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Specific Universal Transverse Mercator projection scale factor at the reference meridian (in this context). |
| Associated Fields | 'TRANSVERSE MERCATOR COORDINATES (UTM)' and 'at Ref. Mer.' |
| Examples | '0.999600'. |
Field 22 |
at Ref. Mer. |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Reference meridian for the Universal Transverse Mercator projection. For the UTM projection, values are '111', '117', '123', '129', '135', and '141'. In addition, the Zone Number of the Reference Meridian is printed on the ISA Certificate. |
| Associated Fields | 'TRANSVERSE MERCATOR COORDINATES (UTM)' and 'Scale Factor'. |
| Examples | '117', '129', 'Zone 10, Central Meridian 123.' (on ISA Certificate). |
Field 23 |
Northing |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Universal Transverse Mercator projection grid northing in metres north of the Equator. On the ID Card and Multiple Listing products, the northing is followed by the Standard Deviation of the coordinate in metres. |
| Associated Fields | at Ref. Mer.' |
| Examples | '5459761.965 m. +/- 0.020 m.', 'N5427745.206' (on ISA Certificate). |
Field 24 |
Easting |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Universal Transverse Mercator projection grid easting in metres from the reference meridian. On the ID Card and Multiple Listing products, the easting is followed by the Standard Deviation of the coordinate in metres. In UTM, value is 500,000 metres at reference meridian and increases eastward (decreases westward). |
| Associated Fields | 'at Ref. Mer.'. |
| Examples | '513345.769 m. +/- 0.023 m.', 'E 524202.813' (on ISA Certificate). |
Field 25 |
Convergence |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Meridian convergence between grid and geographic north in degrees, minutes and seconds (ie. DD MM SS.SS) at the station in question. Value to be added to grid bearings to obtain geodetic azimuths. |
| Associated Fields | 'at Ref. Mer.', 'Northing', 'Easting' . |
| Examples | '00 08 20.84', '00 00 05.20'. |
Field 26 |
Station Ellipsoid Factor |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Factor to remove terrain effects for height above ellipsoid at the station in question. Used in conjunction with another station so as to remove terrain effects for the line (slope distance) in question and thereby obtain ell ipsoid distance (approximate). |
| Associated Fields | 'at Ref. Mer.', 'Northing', 'Easting' . |
| Examples | '0.9999801'. |
Field 27 |
Station Combined Factor |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Factor to remove terrain and ellipsoidal effects at the station in question, using the UTM map projection system. Used in conjunction with another station so as to remove terrain and ellipsoidal effects for the line (slope dista nce) in question and thereby obtain grid distance. |
| Associated Fields | 'at Ref. Mer.', 'Northing', 'Easting' , 'Station Ellipsoid Factor'. |
| Examples | '0.9996541'. |
Field 28 |
MARKER TYPE |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Type of marker. Up to 120 character text (1 line of 80 characters plus 2nd line of 40 characters) describing specific type of marker, followed by an additional 40 characters qualified with respect to the setting of the marker (above/below ground level information and Guard Post information) if applicable. Note that for historical reasons (i.e., prior to MASCOT ), the qualifier statement may be imbedded with the MARKER LOCATION text on some markers. |
| Associated Fields | |
| Examples | 'BRASS CAP IN CONCRETE WITH VALVE COVER 0.1 BGL' |
Field 29 |
MARKER LOCATION |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Description of the marker location. For markers existing prior to MASCOT, this also contains marker condition reports (see CURRENT/HISTORICAL MARKER CONDITION COMMENTS), marker classification comments (see CURRENT MARKER CLASSIFICATION COMMENTS), as well as marker type qualifier (see MARKER TYPE) if applicable. Text description may be up to 960 characters long (12 lines x 80 characters). May contain reference marks information where applicable. |
| Associated Fields | 'CURRENT/HISTORICAL MARKER CONDITION COMMENTS', 'CURRENT MARKER CLASSIFICATION COMMENTS', 'MARKER TYPE'. |
| Examples | SIT IN THE DISTRICT OF COQUITLAM AT THE INTERSECTION OF STEEPLE DR. AND LANSDOWNE ST. INTEGRATED CONTROL SURVEY 1980 D.A. WHITE MKD. BY P.ROCK MONUMEN T MOVED. CHECK HISTORY. |
Field 30 |
PHOTO STATUS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Indicates whether the marker appears on any Aerial Photographs. Possible values are 'TARGETTED' (marker appears on photograph and is covered by a target), 'PHOTO ID' (marker appears on a photograph without a target, but another Photo Identified Point is also present), 'NO PHOTO ID' (marker has not been photographed), or 'UNKNOWN' (the photo status is not known). If a marker has a Photo Status of either 'PHOTO ID' or 'TARGETTED', then the 'MARKER LOCATION' section of the ID Card will generally identify the filmroll and frame numbers where the marker may be found. |
| Associated Fields | 'MARKER LOCATION'. |
| Examples | 'PHOTO ID', 'TARGETTED', 'NO PHOTO ID', 'UNKNOWN'. |
Field 31 |
GAZETTED |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Indicates whether the marker appears in the British Columbia Gazette. Possible values are 'YES' and 'NO'. |
| Associated Fields | |
| Examples | 'YES', 'NO'. |
Field 32 |
CURRENT/HISTORICAL MARKER CONDITION COMMENTS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Explanation of the physical marker condition as reported from the field. The date of the report appears on the right of the explanatory comment, while the date of database update appears on the left of the explanatory comment. Up to four different condition report may be shown, in chronological order and starting with the most current. |
| Associated Fields | 'Marker Condition' and 'MARKER LOCATION'. |
| Examples | 94-01-05 ROY JONES, BCLS, REPORTS MARKER "DESTROYED", 93-12-06 '93-11-28 VERTICAL HEAVING REPORTED BY TOWN OF SIDNEY 93-11-22' |
Field 33 |
CURRENT MARKER CLASSIFICATION COMMENTS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Explanation of the mathematical status of the coordinates and elevation. Also, a report of any shift(s) in coordinates and/or elevation from previous position(s). The horizontal shift vector consists of a bearing (in degrees, minutes, and seconds) and a distance (in metres), while the vertical shift vector consists of an elevation difference (in metres). |
| Associated Fields | 'Horz Class' and 'Vert Class'. |
| Examples | (Under 'HORZ') '93-11-03 201 03 46 0.031 NAD83 W. CANADA OCT/93 MON.INSTABILITY SUSPECTED' '93-11-02 334 26 32 221.999 NAD83 W. CANADA OCT/93 V ALUE FOR PAST LOCATION' (Under 'VERT') '92-10-22 0.048 ELEVATION REVISED AND REINTEGRATED' |
Field 34 |
GRAVITY FIELD DATA |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Relationship between the reference ellipsoid and the geoid, as expressed in terms of the deflections of the vertical and the geoidal undulation or Geoid-Ellipsoid separation, at the station in question. The sign convention followed for the deflections of the vertical is such that the deflection component is positive if the gravity vertical is closer to the north pole and to the right (as viewed from the outside of the earth) of the geodetic vertical. The Geoid-Ellipsoid separation is positive when the geoid is above (higher than, as viewed from th e centre of the earth) the ellipsoid. |
| Associated Fields | 'Component', 'Magnitude', 'Std. Dev.' , 'Meridian Defl,XI(+N)', 'Prime Vert Defl,ETA(+E)', 'Geoid-Ell. Separation'. |
| Examples | N/A (heading only) |
Field 35 |
Component |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Component of the GRAVITY FIELD DATA. The geoid model and method used to derive these components is shown in brackets. |
| Associated Fields | 'Meridian Defl, XI(+N)', ' Prime Vert Defl, ETA (+E)', and 'Geoid-Ell. Separation.' |
| Examples | (GSD91) |
Field 36 |
Magnitude |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Size of particular GRAVITY FIELD DATA Component in arc seconds or metres, depending on the Component. |
| Associated Fields | 'Meridian Defl, XI (+N)', 'Prime Vert Defl. ETA(+E)', and 'Geoid-Ell Separation' |
| Examples | See Fields 37, 38, and 39. |
Field 37 |
STD. DEV. |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Standard Deviation of particular GRAVITY FIELD DATA Component Magnitude in arc seconds or metres, depending on Component. |
| Associated Fields | 'Meridian Defl, XI(+N)', 'Prime Vert. Defl. ETA(+E)', and 'Geoid-Ell. Separation' |
| Examples | See Fields 37, 38, and 39. |
Field 38 |
Meridian Defl, XI(+N) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Component of the vertical in the meridian plane ( ,Xi) at the station in question. Difference in seconds of arc between the actual plumb line at the surface station and the ellipsoidal normal (a positive value indicates actual plumb line tilted north from the ellipsoidal normal). |
| Associated Fields | 'COMPONENT', 'Magnitude', 'Std. Dev. ' |
| Examples | Magnitude Std. Dev 0.85 s 2.0 s |
Field 39 |
Prime Vert Defl, ETA(+E) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Component of the deflections of the vertical in the prime vertical plane ( , Eta) at the station in question. Difference in seconds of arc between the actual plumb line at the surface station and the ellipsoidal normal (a positive value indicates actual plumb line tilted east from the ellipsoidal normal). |
| Associated Fields | 'Component', 'Magnitude', 'Std. Dev.' |
| Examples | Magnitude Std. Dev. 1.83 s 2.0 s |
Field 40 |
Geoid-Ell. Separation |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Separation between the reference ellipsoid and the geoid, given by N=h-H, where h is the ellipsoid height of the station and H is the orthometric height or elevation of the station. |
| Associated Fields | 'Component', 'Magnitude', 'Std. Dev.' |
| Examples | Magnitude 9.30 m Std. Dev. 1.0 m |
Field 41 |
(Ell. Ht. = Ortho. Elev. + Geoid-Ell. Sep.) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | A descriptive comment which reminds the user of the relationship between Ellipsoid Height, Orthometric Elevation, and Geoid-Ellipsoid Separation. |
| Associated Fields | 'Component', 'Magnitude', 'Std. Dev.' |
| Examples | N/A (heading only). |
Field 42 |
MARKER HISTORY |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Information relating to current and historical attributes of the marker. The area is designed to assist the user in identifying any changes to information pertaining to a particular marker - whether it be coordinate type changes or non-coordinate type changes - as of a previous date of interest. As well, historical names and alias associated with the marker are also displayed to assist the user in the proper identification of a GCM. |
| Associated Fields | |
| Examples | N/A (heading only) |
Field 43 |
Originating Project # |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | 5-digit geodetic control project number resulting in published GCM coordinates, horizontal and/or vertical, for the very first time. |
| Associated Fields | Director of Surveys Confirmation Date |
| Examples |
1. HORZ. 87005 VERT. 87005 2. HORZ. 72059 VERT. |
Field 44 |
Director of Surveys Confirmation Date |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | YY/MM/DD of first time publication of final information on particular GCM, appropriately placed under the 'HORZ' and/or 'VERT' columns. |
| Associated Fields | Originating Project # |
| Examples |
1. HORZ. 87/05/19 VERT. 87/05/19 2. HORZ. 74/11/03 |
Field 45 |
COORDINATE REVISIONS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The last three coordinate revisions of the published coordinates/elevation, if applicable. May be horizontal coordinate revisions and/or vertical coord inate (elevation) revisions. |
| Associated Fields | |
| Examples | N/A (Heading Only) |
Field 46 |
Revision Project # |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | 5-digit geodetic control project number resulting in new, revised GCM publication coordinates, horizontal and/or vertical. Up to three revision projects may be noted, with the most recent revision appearing first and the oldest r evision appearing last (third). |
| Associated Fields | Date (below). |
| Examples |
1. HORZ. 81042 VERT. |
Field 46a |
Date |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | YY/MM/DD associated with the 'Revision Project #' event. |
| Associated Fields | Revision Project # |
| Examples |
1. HORZ. 82/03/16 VERT. 87/04/29 |
Field 47 |
NON-COORDINATE REVISION |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The last three non-coordinate type changes pertaining to the
attribute information on the particular GCM. Format: YY/MM/DD and the
two 40 character text lines describing type of change. Note that before
these revisions are shown the following headline appears: 'NOTE: First
Marker Location Description Date', followed by a date (YY/MM/DD). This
indicates the date when the MARKER LOCATION text was first made
available to the public, and as such the information pertaining to this
marker was first accessible to the public on this date.
Changes to the physical marker condition are an exception to this rule of non-coordinate type changes being reported under this section. Therefore a note referring the user to the CURRENT/HISTORICAL MARKER CONDITION COMMENTS field for a history of such changes is recorded here (i.e., NOTE: see also Curr./Hist . Marker Cond. Comm.). |
| Associated Fields | |
| Examples | 93/12/06 SEE MARKER LOCATION |
Field 48 |
HISTORICAL/OTHR MARKER NAMES |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Record of previous names and numbers associated with the GCM, including those markers bearing a National Geodetic Data Base Name and Number, are shown as a cross-reference with Geodetic Survey of Canada. The old CSDB Unique Identifier and CSDB Name fields are shown here, if applicable, for historical cross-referencing. If the marker appears in the Alberta Survey Control Database, then an "OTHER" name of the form 'ALTAxxxxxxx' (where 'xxxxxxx' is a unique Alberta Survey Control Marker number) will be printed. |
| Associated Fields | |
| Examples |
CSDB ID: 77H6940 NAME: POST 77H6940 OTHER: ALTA0468462 5471187024 |
Field 49 |
SURVEY CONNECTIONS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Record of sight-lines, as previously observed, from the particular GCM to surrounding survey control (GCMs). As well, the adjusted linear and angular quantities to these stations are shown as an aid to computations on the terrain, mapping plane, or reference ellipsoid. On the ID Card Product, note that for only a maximum of four sight lines is such detailed information shown. For other sight lines, the GCM numbers only are recorded (under 'Other connections to'). The above four sight lines are chosen on the basis of obtaining a representative sample of sight-lines around the full-circle horizon. Therefore, they are not necessarily the latest surveyed lines from this GCM. The ISA Certificate lists all sight lines, with a special comment of 'MARKER ISOLATED' printed if no sight lines exist. |
| Associated Fields | |
| Examples | MARKER ISOLATED (ISA Certificate only). |
Field 50 |
Date of Last Update: |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The date the Survey Connections section of the Final ID card was last updated. |
| Associated Fields | SURVEY CONNECTIONS |
| Examples | 93-11-03 ('November 3, 1993'). |
Field 51 |
GCM # To |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The GCM number of the sighted station. |
| Associated Fields | SURVEY CONNECTIONS,GCM # |
| Examples | 248815 |
Field 51a |
Tablet Markings |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The Tablet Markings of the sighted station. |
| Associated Fields | SURVEY CONNECTIONS, TABLET MARKINGS. |
| Examples | 77H6939. |
Field 52 |
Surv. Meth. |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The survey method used to survey between the two markers in question. May be either 'TERR' (Terrestrial, meaning a distance and/or direction observation was observed) or 'GPS' (a GPS observation was observed). Note that Terrestrial observations take precedence over GPS observations, so a value of 'TERR' does not necessarily mean that the stations are not connected by GPS observations. |
| Associated Fields | SURVEY CONNECTIONS. |
| Examples | TERR, GPS. |
Field 53 |
Ground Distance (m.) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The average ground horizontal distance to the sighted station in metres, i.e., the horizontal distance to the sighted station at the mean elevation of the two stations in question. On the ID Card Product, this is only shown if the marker from which the sight-line originates falls in the URBAN category (i.e., appears on an Urban Geodetic Control Index as opposed to the Rural Geodetic Control Index). Where the marker from where the sightline originates falls in the RURAL category, this distance is shown as 'Slope Distance' instead of 'Ground Distance'. |
| Associated Fields | SURVEY CONNECTIONS |
| Examples | 232.078 |
Field 54 |
Slope Distance (m.) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | This spatial marker to marker distance to the sighted station in metres. This is only shown if the marker from where the sight-line originates falls in the RURAL category (i.e., appears on a Rural Geodetic Control Index as opposed to an Urban Geodetic Control Index). Where the marker from where the sight-line originates falls in the URBAN category, this distance is shown as 'Ground Distance' instead of 'Slope Distance'. |
| Associated Fields | SURVEY CONNECTIONS |
| Examples | 232.084 |
Field 55 |
Std. Dev. (m.) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The standard deviation, in metres, associated with 'Ground Distance' or 'Slope Distance', as the case may be. |
| Associated Fields | SURVEY CONNECTIONS, Ground Distance, Slope Distance. |
| Examples | 0.004 |
Field 55a |
Std. Dev. (PPM) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The standard deviation, in Parts Per Million (PPM), associated with 'Ground Distance' or 'Slope Distance', as the case may be. |
| Associated Fields | SURVEY CONNECTIONS, Ground Distance, Slope Distance. |
| Examples | 20 |
Field 56 |
Grid/Grnd Factor |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Factor required to reduce the 'Ground Distance' to the relevant mapping plane. This is only shown if the marker from where the sight-line originates falls in the URBAN category (i.e., appears on an Urban Geodetic Control Index as opposed to a Rural Geodetic Control Index). Where the marker from where the sight-line originates falls in the RURAL category, this factor is shown as 'Grid/Slope Factor' instead of 'Grid/Grnd Factor'. |
| Associated Fields | 'SURVEY CONNECTIONS', 'TRANSVERSE MER CATOR COORDINATES (UTM)', 'MASCOT DSS'. |
| Examples | 0.9998108 |
Field 57 |
Grid/Slope Factor |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Factor required to reduce the 'Slope Distance' to the relevant mapping plane. This is only shown if the marker from where the sight-line originates falls in the RURAL category (i.e., appears on a Rural Geodetic Control Index as opposed to an Urban Survey Geodetic Index). Where the marker from where the sight-line originates falls in the URBAN category, this factor is shown as 'Grid/Grnd Factor' rather than 'Grid/Slope Factor'. |
| Associated Fields | SURVEY CONNECTIONS, 'TRANSVERSE MERCA TOR COORDINATES (UTM), Station Combined Factor. |
| Examples | 0.9998013 |
Field 58 |
Astronomic Azimuth D M S |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The astronomic azimuth to the sighted station in degrees, minutes and seconds (DDD MM SS.SS). It is based on published coordinates for the two end-poin t stations. This is only shown if the marker from where the sight-line originates falls in the RURAL category (i.e., appears on a Rural Geodetic Control Index as opposed to an Urban Geodetic Control Index). Where the marker from where the sight-line originates falls in the URBAN category, this azimuth is shown as 'Grid Bearing' instead of 'Astronomic Azimuth'. |
| Associated Fields | SURVEY CONNECTIONS |
| Examples | 156 23 19.82 |
Field 59 |
Grid Bearing D M S |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The grid bearing to the sighted station in degrees, minutes and seconds (DDD MM SS.SS). It is based on published coordinates for the two end-point stations. On the ID Card Product, this is only shown if the marker from where the sight-line originates falls in the URBAN category (i.e., appears on an Urban Geodetic Control Index as opposed to a Rural Geodetic Control Index). Where the marker from where the sight-line originates falls in the RURAL category, this bearing is shown as 'Astronomic Azimuth' instead of 'Grid Bearing'. |
| Associated Fields | SURVEY CONNECTIONS, TRANSVERSE MERCA TOR COORDINATES (UTM) |
| Examples | 123 47 56.11 |
Field 60 |
Std. Dev. (S) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The standard deviation associated with 'Astronomic Azimuth' or 'Grid Bearing', as the case may be, in arcseconds. It is based on published coordinates accuracy (covariance data) estimates for the two end-point stations. |
| Associated Fields | SURVEY CONNECTIONS, Astronomic Azimu th, Grid Bearing |
| Examples | 5.4 |
Field 61 |
T-t Corr (S) |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The correction, in arcseconds, to be applied to 'Grid Bearing' so as to obtain the chord bearing to the sighted station. Upon application of the 'Convergence' a geodetic azimuth to the sighted station may be obtained. |
| Associated Fields | SURVEY CONNECTIONS, Grid Bearing, Con vergence, TRANSVERSE MERCATOR COORDINATES (UTM) |
| Examples | -0.03 |
Field 62 |
Project # |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | 5-digit number for the project responsible for British Columbia Geodetic Control activity. It is assigned by SRMB internally. Upon completion of the Geodetic Control activity, this number translates to either 'Originating Project #' or 'Revision Project #', depending on whether this project is a first time establishment of control or pertains to a survey of existing control that results in revised coordinates/elevation publication. |
| Associated Fields | Originating Project #, Revision Proje ct # |
| Examples | 93015 |
Field 63 |
FIELD STATUS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Date and explanation of the project field status for new British Columbia Survey Control activity that is currently on-going. The date of System receipt of the MARKER LOCATION for the new marker is shown beside 'First marker Loc. Desc. Date' on the Preliminary ID Card. |
| Associated Fields | MARKER LOCATION |
| Examples |
FIELD STATUS ----------------------- Date Issued 1 93-11-15 First Marker Loc. Desc. Date 93-09-06 |
Field 64 |
DATA PROCESSING STATUS |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | In-house (SRMB) status of project data processing. |
| Associated Fields | Data Processing Commenced, Date Edit Finished, Date Elevation Derived, Date Horz Coords Derived, Project # |
| Examples | N/A (Heading only) |
Field 65 |
Date Processing Commenced |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Indication of commencement date for in-house (SRMB) data processing for th e project. |
| Associated Fields | DATA PROCESSING STATUS, PROJECT #' |
| Examples | 93-12-01 |
Field 66 |
Date Edit Finished |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | In-house (SRMB) date which gives the date all project fieldnotes were verified and loaded into the MASCOT System. |
| Associated Fields | DATA PROCESSING STATUS, Project # |
| Examples | 93-12-05 |
Field 67 |
Date Elevation Derived |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Date of derivation of elevations for the marker and project. |
| Associated Fields | Elevation, DATA PROCESSING STATUS, Ve rt Class, Datum, Date, Project # |
| Examples | 93-12-05 |
Field 68 |
Date Horz Coords Derived |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Date of derivation of horizontal coordinates for the marker and project. |
| Associated Fields | Latitude, Longitude, Horz Class, Datum, Date, DATA PROCESSING STATUS, Project # |
| Examples | 93-10-10 |
Field 69 |
Project Comments |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Comments pertaining to the project made by SRMB. |
| Associated Fields | PROJECT # |
| Examples | ADDITIONAL MEASUREMENTS REQUIRED TO RESOLVE INTEGRATION PROBLEMS |
Field 70 |
CAUTION PRELIMINARY INFORMATION ONLY |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | Statement to warn Preliminary ID Card product users of the preliminary nature of the information shown. The preliminary ID card product is designed to make aware users of Geodetic Information of the Geodetic Control activity in a particular area. As such, the coordinates/elevation information, though it may be a product of least squares adjustment processes, is approximate and subject to change without notice. The SRMB assumes no responsibility for any error or misuse of this information. |
| Associated Fields | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10A, 1 1, 12, 13, 14, 15, 16, 17, 27, 28, 29, 30, 31, 32, 45, 60, 61, 62, 63, 64, 65, 66, 67, 68 |
| Examples | N/A (Heading only) |
Field 71 |
UTM Grid Distance Metres |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The grid distance to the sighted station in metres. It is based on the published coordinates for the two end-point stations. |
| Associated Fields | TRANSVERSE MERCATOR COORDINATES (UTM) , Northing, Easting, Ref. Mer., Scale Factor. |
| Examples | 114.449 |
Field 72 |
Integrated Survey Area No. |
|---|---|
| On Product | x ID Card x Prelim ID Card x Multiple Listing Index ISA Certificate |
| Description | The Number and Name of the ISA the Certificate is issued for. The Order in Council Number which established the ISA is also printed. |
| Associated Fields | |
| Examples |
Integrated Survey Area No. 1 Municipality of Surrey Order in Council No. 3050/73. |
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