[IGSREPORT-7990] Wk 1099 EMR Analysis Report

Pierre Tetreault pierre at geod.nrcan.gc.ca
Mon Feb 12 10:15:33 PST 2001


******************************************************************************
IGS Electronic Report   12 Feb 10:15:47 PST 2001      Message Number 7990
******************************************************************************

Author: NRCan/GSDivision

********************************************************************************
EMR ANALYSIS REPORT GPS-WEEK 1099    Dates: 01jan28  to  01feb03                
********************************************************************************

NRCan (Natural Resources Canada, formerly Energy, Mines and Resources (EMR))
615 Booth Street, Ottawa, Canada K1A 0E9
e-mail: pierre at geod.nrcan.gc.ca, huot at geod.nrcan.gc.ca
tel:    (613)992-2218 (Pierre Tetreault)
	(613)996-4914 (Caroline Huot)
fax:    (613)995-3215

PRODUCTS GENERATED:
The following products are generated and uploaded into CDDIS @ NASA/GSFC
   EMR10990-6.SP3     GPS ephem. files for days 0-6, week #1099 in sp3 format 
   EMR10997.ERP       pole x,y and DUT1 solutions for week #1099
   EMR10997.SNX       station and EOP weekly combined solution in SINEX format
   EMR10997.SUM       name of this text summary file

REMARKS on EMR products:
1. ALGO receiver clock used as reference time. In the sp3 EPH file sat. clock
   correction value of 999999.999999 microseconds indicates that the direct clock 
   comparison with the reference clock is not available (e.g. ALGO not observing
   a satellite). 
   DRAO clock error & drift were about 701 ns (51937) & 13 ns/day w.r.t.
   GPS time
   USNO clock error & drift were about -87 ns (51941) & 8 ns/day w.r.t.
   GPS time
 
2.      Date  |  PRN  | Action |     Period     |      Reason
     +--------+-------+--------+----------------+----------------------------+
      01jan31    19       E     00:00 to 23:45   Modeling problems
      01feb01    21       R     00:00 to 02:00   Modeling Problems
     +--------+-------+--------+----------------+----------------------------+
     (R)  Satellite was removed from EMR SP3 file.
     (E)  Satellite was excluded prior to processing data.
     (M)  Satellite in maneuver.

SOLUTION CHARACTERISTICS
1. Solution identifier:  Submission 010212
2. Software used      :  GIPSY/OASIS II (UNIX )
3. Definition of Terrestrial frame:
   origin and orientation         :  Nominally IGS97
   reference epoch                :  current date
   GM                             :  398600.4415 km^3/s^2
   gravity model                  :  GEMT3( 8,8) +C21+S21
   ocean loading                  :  Pagiatakis, global_model
4. Solution characteristics:
      undifferenced phase and smoothed pseudorange data for satellite
      elevation > 15 degrees at 7.5 min. normal point interval; single 
      day (24h) arc with 6 IC and 3 rad. parameters per satellite
5. See IGS Mail#928 (April 05, 1995) and IGS Report#1488 (January 16, 1995)
   for more details regarding EMR processing strategy.


CARRIER PHASE / PSEUDO RANGE STATISTICS

Note: F indicates a constrained fiducial site
      E indicates an eclipsing satellite

                             Carrier Phase Statistics
                                 rms (cm) /  # obs  

            01jan28   01jan29   01jan30   01jan31   01feb01   01feb02   01feb03 
          ---------------------------------------------------------------------
ALGO       .39/1545  .39/1534  .44/1553  .43/1488  .41/1540  .40/1549  .42/1466 
ALIC       .00/   0  .00/   0  .00/   0  .50/1505  .55/1305  .57/1497  .00/   0 
AREQ       .49/1529  .44/1363  .51/1344  .50/1476  .51/1560  .00/   0  .48/1367 
AUCK       .51/1413  .42/1403  .43/1423  .00/   0  .44/1446  .45/1198  .46/1301 
BAHR       .49/1512  .46/1184  .45/1503  .43/1538  .41/1439  .45/1527  .46/1614 
BILI       .60/1790  .59/1737  .59/1833  .50/1257  .58/1636  .00/   0  .56/1460 
BRMU       .68/1346  .54/1377  .45/1397  .46/1285  .47/1375  .43/1395  .45/1398 
CAS1       .44/1524  .45/1578  .43/1624  .41/1319  .43/1609  .43/1626  .47/1703 
CHUR       .55/1483  .53/1454  .53/1195  .50/1188  .57/1454  .55/1572  .53/1602 
DRAO       .43/1555  .42/1555  .43/1567  .38/1473  .43/1562  .44/1527  .45/1531 
EISL       .63/1122  .54/1077  .60/1164  .75/ 969  .62/ 865  .61/ 951  .56/1031 
FAIR       .00/   0  .00/   0  .66/1172  .39/ 870  .00/   0  .65/1109  .00/   0 
FORT       .70/ 760  .74/ 827  .68/ 739  .77/ 785  .72/ 734  .00/   0  .71/ 789 
GALA       .00/   0  .00/   0  .00/   0  .00/   0  .00/   0  .52/1476  .00/   0 
HOB2       .59/1540  .61/1290  .58/1580  .00/   0  .00/   0  .00/   0  .00/   0 
IISC       .62/ 934  .56/1050  .50/1029  .51/1028  .60/1076  .54/1101  .56/1063 
IRKT       .54/1510  .53/1499  .52/1435  .53/1364  .53/1333  .51/1498  .54/1498 
KERG       .53/1534  .58/1510  .75/1570  .55/1464  .56/1550  .56/1543  .52/1352 
KOKB       .00/   0  .00/   0  .00/   0  .00/   0  .00/   0  .00/   0  .60/ 901 
KWJ1       .69/1160  .54/ 816  .63/ 983  .67/1006  .82/1205  .61/ 934  .58/ 941 
LHAS       .50/1396  .42/1523  .48/1553  .45/1494  .51/1384  .00/   0  .00/   0 
MALI       .79/1161  .81/1273  .75/ 705  .00/   0  .00/   0  .85/1030  .82/1232 
MAS1       .00/   0  .00/   0  .00/   0  .45/ 942  .47/1541  .47/1513  .47/1331 
MATE       .52/1597  .57/1589  .52/1600  .45/1535  .45/1598  .48/1608  .48/1607 
MCM4       .52/ 959  .46/ 959  .45/1153  .47/ 828  .45/ 934  .42/ 946  .46/ 981 
MKEA       .67/1474  .70/1244  .00/   0  .62/1535  .67/1586  .61/1443  .00/   0 
NKLG       .00/   0  .00/   0  .00/   0  .00/   0  .75/1667  .85/1484  .87/1589 
NRC1       .31/1560  .36/1559  .33/1563  .34/1511  .33/1555  .33/1565  .33/1438 
NRC2       .31/1561  .00/   0  .33/1563  .33/1511  .33/1560  .33/1563  .31/1304 
OHIG       .44/1437  .43/1400  .00/   0  .00/   0  .00/   0  .00/   0  .00/   0 
PIE1       .51/1365  .37/1267  .43/1376  .37/1222  .38/1313  .38/1370  .40/1377 
PIMO       .46/ 926  .41/ 820  .39/ 910  .50/ 863  .51/ 972  .52/ 763  .73/ 797 
POL2       .38/1410  .40/1420  .49/1418  .37/1222  .38/1406  .38/1434  .40/1282 
POTS       .47/1589  .48/1479  .47/1485  .47/1397  .48/1592  .51/1512  .53/1415 
RIOG       .00/   0  .00/   0  .43/1480  .44/1267  .46/1376  .45/1531  .44/1338 
STJO       .47/1589  .47/1586  .45/1233  .43/ 699  .44/1522  .43/1518  .39/1463 
SUTH       .47/1294  .48/1379  .45/1322  .40/1251  .44/1376  .46/1338  .45/1290 
THTI      1.00/1494  .92/1059  .72/ 980  .67/ 814  .70/1558  .82/1463  .79/1497 
THU1       .66/1519  .79/1406  .67/1714  .63/1314  .68/1375  .67/1662  .00/   0 
TOW2       .00/   0  .00/   0  .00/   0  .00/   0  .00/   0  .00/   0  .95/1483 
TSKB       .43/1488  .44/1489  .40/1504  .40/1425  .45/1497  .44/1492  .45/1531 
USNO       .59/1546  .55/1552  .65/1345  .57/1505  .57/1548  .56/1547  .55/1503 
VILL       .53/1208  .00/   0  .51/1502  .62/1216  .59/1531  .38/1411  .38/1284 
YAR1       .50/ 966  .51/ 939  .59/ 508  .00/   0  .00/   0  .00/   0  .56/1309 
YELL       .42/1517  .43/1491  .44/1653  .37/1150  .41/1503  .43/1685  .44/1680 
ZWEN       .63/1593  .53/1551  .48/1469  .54/1419  .53/1232  .53/1238  .00/   0 

PRN01 E    .57/1981  .56/1849  .65/2016  .51/1663  .54/2038  .59/2046  .55/1956 
PRN02      .52/1838  .45/1740  .50/1857  .48/1735  .52/1894  .51/1778  .54/1790 
PRN03      .60/1813  .49/1537  .53/1736  .52/1215  .51/1653  .59/1646  .48/1649 
PRN04 E    .54/2351  .53/2070  .48/2107  .49/2033  .54/2272  .53/2185  .59/1952 
PRN05      .54/2126  .47/1278  .49/1928  .50/1866  .56/2118  .50/2080  .56/1750 
PRN06      .57/1906  .59/1838  .49/1836  .48/1792  .55/2037  .52/1874  .55/1909 
PRN07      .50/2149  .50/1950  .48/2139  .50/1991  .54/2211  .52/2122  .52/1919 
PRN08      .49/1799  .50/1637  .51/1697  .44/1526  .49/1827  .52/1778  .55/1711 
PRN09      .59/2048  .53/1771  .51/1824  .49/1757  .52/1981  .50/1909  .56/1841 
PRN10      .54/2074  .52/1820  .49/1996  .52/1895  .50/2161  .48/2107  .52/1957 
PRN11 E    .55/1920  .55/1647  .61/1738  .53/1763  .56/1874  .56/1807  .55/1924 
PRN13 E    .54/2084  .58/1912  .57/1990  .50/1763  .53/2067  .62/1799  .55/1965 
PRN14 E    .56/2002  .55/1831  .51/1802  .51/1793  .54/1998  .54/1753  .50/1663 
PRN17      .55/1750  .52/1627  .50/1705  .46/1701  .48/1826  .47/1697  .54/1688 
PRN19      .49/1839  .52/1798  .50/1721  .00/   0  .54/1934  .51/1906  .51/1531 
PRN20      .61/2104  .58/2023  .55/1969  .50/1904  .54/2033  .57/2065  .60/1987 
PRN21      .62/1621  .50/1759  .56/1796  .54/1730  .48/1795  .45/1842  .50/1732 
PRN22      .54/1856  .56/1793  .53/1878  .51/1744  .50/1787  .53/1880  .54/1885 
PRN23      .55/1852  .58/1789  .49/1890  .44/1771  .52/1992  .50/1931  .53/1837 
PRN24 E    .51/2255  .51/2028  .48/2112  .51/2053  .52/2285  .50/2248  .57/1978 
PRN25      .59/2106  .57/2154  .51/2133  .51/1894  .52/2051  .57/2042  .56/2083 
PRN26 E    .59/1819  .57/1745  .56/1711  .49/1669  .59/1853  .47/1827  .62/1938 
PRN27      .46/1721  .50/1589  .52/1789  .43/1519  .45/1631  .52/1858  .51/1770 
PRN28      .55/2037  .49/1751  .50/1987  .46/1794  .48/1845  .53/1948  .51/1794 
PRN29      .56/2016  .51/1801  .51/1962  .47/1881  .53/2098  .53/1880  .53/1912 
PRN30      .56/2073  .59/1903  .46/1997  .53/1982  .57/2242  .48/1853  .55/1943 
PRN31      .50/1766  .48/1599  .50/1831  .47/1701  .48/1812  .54/1758  .49/1684 


                             Pseudo Range Statistics
                                rms (cm) /  # obs

            01jan28   01jan29   01jan30   01jan31   01feb01   01feb02   01feb03 
          ---------------------------------------------------------------------
ALGO        57/1545    0/   0   32/1552   30/1488   31/1538   36/1549   50/1466 
ALIC         0/   0    0/   0    0/   0   46/1505   45/1305   46/1497    0/   0 
AREQ        28/1529   22/1363   23/1344   25/1476   24/1560    0/   0   28/1367 
AUCK        48/1414   47/1403   50/1423    0/   0   40/1446   42/1198   48/1302 
BAHR        30/1512   30/1184   31/1503   28/1538   34/1439   29/1527   27/1614 
BILI        31/1790   32/1737   31/1833   31/1257   32/1636    0/   0   30/1460 
BRMU        46/1346   49/1377   44/1397   54/1285   48/1375   43/1395   41/1398 
CAS1        25/1524   25/1578   22/1624   23/1319   25/1609   25/1626   27/1703 
CHUR        30/1483   30/1454   29/1195   34/1188   33/1454   27/1572   28/1602 
DRAO        39/1555   32/1555   33/1567   31/1473   35/1562   33/1527   37/1531 
EISL        60/1122   60/1081   67/1164   69/ 969   65/ 865   67/ 951   67/1031 
FAIR         0/   0    0/   0   38/1173   22/ 870    0/   0   24/1112    0/   0 
FORT        88/ 760   88/ 827   91/ 739   82/ 790   82/ 734    0/   0   89/ 789 
GALA         0/   0    0/   0    0/   0    0/   0    0/   0   22/1465    0/   0 
HOB2        40/1540   41/1290   41/1580    0/   0    0/   0    0/   0    0/   0 
IISC        74/ 934   69/1050   73/1029   68/1028   71/1077   65/1101   69/1064 
IRKT        53/1510   52/1499   49/1435   45/1364   46/1333   44/1498   45/1498 
KERG        58/1534   57/1510   57/1574   56/1464   54/1550   58/1543   59/1352 
KOKB         0/   0    0/   0    0/   0    0/   0    0/   0    0/   0   69/ 901 
KWJ1        33/1160    0/   0   30/ 983   32/1009   30/1207   30/ 934   43/ 941 
LHAS        29/1396   29/1523   29/1553   29/1494   28/1384    0/   0    0/   0 
MALI        79/1162   83/1277   79/ 706    0/   0    0/   0   82/1031   81/1232 
MAS1         0/   0    0/   0    0/   0   35/ 942   33/1541   33/1513   35/1331 
MATE        56/1597    0/   0   57/1600   55/1535   53/1599   53/1608   51/1607 
MCM4        64/ 959   51/ 959   53/1153   48/ 828   51/ 934   53/ 946   57/ 981 
MKEA        23/1474   24/1244    0/   0   21/1536   23/1586   21/1443    0/   0 
NKLG         0/   0    0/   0    0/   0    0/   0   67/1667   68/1484   67/1589 
NRC1         0/   0    0/   0   34/1563   40/1510   39/1555   38/1565   64/1438 
NRC2         0/   0    0/   0   37/1563   42/1511   43/1560   42/1563   66/1304 
OHIG        66/1437    0/   0    0/   0    0/   0    0/   0    0/   0    0/   0 
PIE1        56/1365   61/1267   53/1378   65/1223   59/1314   56/1370   53/1377 
PIMO        79/ 926   71/ 820   71/ 910   67/ 863   79/ 972   87/ 763  109/ 797 
POL2        45/1410   45/1420   45/1418   43/1222   42/1407   49/1434   51/1282 
POTS        74/1589   72/1479   72/1485   76/1397   74/1592   76/1513   76/1416 
RIOG         0/   0    0/   0   29/1480   29/1232   30/1376   29/1531   31/1338 
STJO        25/1589   25/1586   23/1233   30/ 699   26/1522   26/1518   23/1463 
SUTH        64/1294   55/1380   63/1323   63/1251   44/1376   54/1338   64/1291 
THTI        72/1497   67/1062   75/ 980    0/   0   68/1558   69/1464   71/1498 
THU1        36/1522   38/1406   36/1714   37/1314   37/1375   39/1662    0/   0 
TOW2         0/   0    0/   0    0/   0    0/   0    0/   0    0/   0   22/1487 
TSKB        51/1488   48/1490   50/1504   44/1425   47/1497   43/1492   42/1531 
USNO        37/1546   39/1553   35/1346   37/1505   38/1548   38/1547   38/1503 
VILL        46/1201    0/   0   78/1499   36/1215   40/1530    0/   0   51/1283 
YAR1        57/ 966   51/ 939   60/ 508    0/   0    0/   0    0/   0   49/1309 
YELL        29/1517   37/1491   31/1653   27/1150   29/1503   29/1685   29/1680 
ZWEN         0/   0    0/   0   69/1468   43/1419   66/1230   60/1002    0/   0 

PRN01 E     51/1811   50/1508   49/2016   49/1641   47/2038   47/1939   50/1956 
PRN02       50/1668   53/1440   50/1857   50/1694   46/1894   45/1727   48/1790 
PRN03       51/1682   48/1254   46/1736   45/1216   47/1654   47/1591   49/1648 
PRN04 E     50/2084   47/1691   49/2109   43/1970   45/2272   47/2166   57/1953 
PRN05       54/1921   40/1019   50/1927   41/1843   47/2118   46/2037   50/1750 
PRN06       47/1728   46/1527   49/1835   45/1759   44/2037   44/1834   52/1909 
PRN07       51/1923   49/1555   56/2141   51/1944   51/2209   50/2021   56/1919 
PRN08       52/1664   54/1353   46/1698   45/1482   47/1827   50/1720   58/1711 
PRN09       48/1881   49/1443   46/1824   44/1715   42/1981   44/1859   52/1841 
PRN10       53/1876   49/1467   49/1996   46/1829   49/2162   45/2054   54/1957 
PRN11 E     52/1749   49/1292   49/1738   43/1730   47/1874   46/1735   53/1924 
PRN13 E     51/1866   49/1531   48/1990   48/1724   49/2064   49/1713   54/1965 
PRN14 E     50/1845   44/1529   46/1802   40/1776   45/1998   46/1687   54/1664 
PRN17       53/1623   54/1428   49/1704   47/1663   49/1826   49/1654   56/1690 
PRN19       51/1692   48/1503   53/1721    0/   0   45/1935   42/1809   50/1531 
PRN20       47/1867   49/1617   49/1970   44/1870   49/2033   48/1953   52/1987 
PRN21       51/1484   45/1523   47/1795   42/1716   44/1794   43/1770   50/1734 
PRN22       52/1694   48/1522   47/1878   46/1704   48/1787   52/1823   51/1885 
PRN23       52/1705   49/1502   49/1892   44/1747   44/1993   48/1865   52/1837 
PRN24 E     49/1995   48/1661   49/2112   47/1990   46/2286   50/2190   54/1978 
PRN25       49/1925   50/1814   50/2133   42/1889   45/2051   47/1981   54/2083 
PRN26 E     53/1692   49/1449   50/1711   42/1619   43/1855   44/1780   53/1938 
PRN27       51/1579   51/1326   49/1790   45/1487   48/1631   46/1789   48/1770 
PRN28       51/1871   54/1467   52/1987   48/1773   51/1845   54/1941   54/1797 
PRN29       48/1857   48/1501   48/1962   42/1871   46/2098   47/1828   46/1912 
PRN30       47/1884   46/1576   47/1997   40/1965   45/2242   42/1809   51/1943 
PRN31       52/1627   49/1306   49/1831   46/1677   43/1812   46/1692   52/1684 


                         Station Clock Offsets Solution for 0h UT
                               (microsecond / sigma in ns)

       01jan28   01jan29   01jan30   01jan31   01feb01   01feb02   01feb03  sig 
       ------------------------------------------------------------------------
ALGO    -.5922       ---    -.7212    -.7205     .1108    -.7189    -.7157   .3
ALIC       ---       ---       ---    -.8261    -.0593    -.8693       ---   .3
AREQ   73.9484  101.8776   16.4924   44.1691   72.6977       ---  126.3277   .5
AUCK    -.7030    -.7515    -.7421       ---     .0560    -.7954    -.8105   .3
BAHR  762.2111  762.2034  762.1966  762.1891  763.0125  762.1714  762.1631   .3
BILI    -.7779*   -.8056*   -.8013*   -.8279*    .0043*      ---    -.8615*  .3
BRMU    -.6945    -.7341    -.6994    -.7495     .0672    -.7692    -.7902   .3
CAS1    -.6993    -.7462    -.7554    -.7577     .0640    -.7858    -.7965   .4
CHUR   -3.5004   -3.5005   -3.5061   -3.5091   -2.6897   -3.5309   -3.5322   .4
DRAO       REF       REF       REF       REF     .8304       REF       REF   .3
EISL    -.7156    -.7072    -.7178    -.7282     .0656    -.7618*   -.7877   .4
FAIR       ---       ---    -.6755*   -.6865       ---    -.7049       ---   .4
FORT   -1.4234*   -.8336*   -.8306    -.8297*    .0059*      ---    -.8189   .9
GALA       ---       ---       ---       ---       ---    -.8939       ---   .7
HOB2   -6.4772   -6.5508   -6.6242       ---       ---       ---       ---   .3
IISC    -.7429*   -.7381    -.7384    -.7520     .0777    -.7664    -.7986   .4
IRKT  321.3298  321.3078  321.2853  321.2611  322.0691  321.2129  321.1919   .3
KERG  981.4178*  90.8436* 932.5222* 296.8875* 154.4065* 331.5292* 224.8667*  .3
KOKB       ---       ---       ---       ---       ---       ---    -.8114  1.2
KWJ1   -1.1705*      ---   -1.0305*  -1.0108*    .0529*   -.7715*   -.8000*  .8
LHAS    -.7077    -.7215    -.7287    -.7453     .0791       ---       ---   .3
MALI  -48.6101  -43.3708  -38.2208       ---       ---  -10.5889    2.8939   .4
MAS1       ---       ---       ---    -.8010   59.3941   58.5473   58.5271   .5
MATE  349.5203*      ---  348.8282* 348.4803* 348.9648* 347.7852* 347.4359*  .3
MCM4  243.2634  260.7780  278.7674     .1157*  18.5629   35.7823   54.0260   .5
MKEA    -.8800    -.8913       ---    -.9007    -.0884    -.9345       ---   .3
NKLG       ---       ---       ---       ---  987.8408  541.2877   94.1524   .6
NRC1       ---       ---    -.9115    -.9291    -.1148    -.9632    -.9840   .3
NRC2       ---       ---    -.8890    -.9064    -.0924    -.9408    -.9622   .3
OHIG    -.7449       ---       ---       ---       ---       ---       ---   .3
PIE1    -.7850    -.8046    -.8257    -.8480    -.0375    -.8894    -.9098   .3
PIMO    -.7076    -.7247    -.7341    -.7304*    .1128    -.7875    -.7875   .8
POL2    -.6903    -.7210    -.7280    -.7316     .0845    -.7784    -.7719   .3
POTS    -.7207    -.6978    -.7243    -.7327*    .0740    -.7877    -.7698   .3
RIOG       ---       ---    -.8115    -.8273    -.0118    -.8645    -.8773   .3
STJO    -.5828    -.5894    -.5906       ---     .2483    -.6045    -.6425   .3
SUTH    -.7138    -.7242    -.7408    -.7420     .1017    -.7742    -.7707   .3
THTI  656.5228* 673.4352* 813.6191*      ---  103.4512* 119.8303* 137.1478*  .3
THU1    -.7044    -.7150    -.7189    -.7551     .0678    -.7531       ---   .4
TOW2       ---       ---       ---       ---       ---       ---    -.8001   .3
TSKB   -1.6972   -1.7080   -1.7073   -1.7253    -.9044   -1.7344   -1.7386   .3
USNO    -.7783    -.7905    -.8038    -.8181       REF    -.8446    -.8579   .3
VILL   -6.8063       ---   -6.9988   -7.1107   -6.3649       ---   -7.4174   .3
YAR1    -.3509*   -.0748     .7270*      ---       ---       ---   -3.7946   .5
YELL    -.1813    -.1917    -.2029    -.2167     .6034    -.2380    -.2490   .4
ZWEN       ---       ---    -.7317    -.7438     .0866    -.7955       ---   .3
  
  
Notes: * indicates epoch other than 0h UT
       Sig are sigmas, in ns, averaged over 7 days
       !!ms!! indicates offsets greater than 1 millisecond
 
global: ALGO ALIC AREQ AUCK BAHR BILI BRMU CAS1 CHUR DRAO EISL FAIR FORT GALA
global: HOB2 IISC IRKT KERG KOKB KWJ1 LHAS MALI MAS1 MATE MCM4 MKEA NKLG NRC1
global: NRC2 OHIG PIE1 PIMO POL2 POTS RIOG STJO SUTH THTI THU1 TOW2 TSKB USNO
global: VILL YAR1 YELL ZWEN
--

Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: pierre at geod.nrcan.gc.ca



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