[IGSREPORT-8475] Wk 1123 EMR Analysis Report
Pierre Tetreault
pierre at geod.nrcan.gc.ca
Tue Jul 31 05:28:22 PDT 2001
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IGS Electronic Report 31 Jul 05:28:25 PDT 2001 Message Number 8475
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Author: NRCan/GSDivision
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EMR ANALYSIS REPORT GPS-WEEK 1123 Dates: 01jul15 to 01jul21
********************************************************************************
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
EMR11230-6.SP3 GPS ephem. files for days 0-6, week #1123 in sp3 format
EMR11237.ERP pole x,y and DUT1 solutions for week #1123
EMR11237.SNX station and EOP weekly combined solution in SINEX format
EMR11237.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).
ALGO clock error & drift were about 861.4 ns (52105) & 3.3 ns/day w.r.t.
GPS time
2. Date | PRN | Action | Period | Reason
+--------+-------+--------+----------------+----------------------------+
01jul16 21 R 22:00 to 23:45 Modeling Problems
01jul19 11 R 00:00 to 23:45 Modeling Problems
01jul20 24 EM 00:00 to 23:45 See Ref Nanu 2001095
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 010730
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
01jul15 01jul16 01jul17 01jul18 01jul19 01jul20 01jul21
---------------------------------------------------------------------
ALGO .43/1658 .49/1653 .48/1653 .39/1655 .42/1647 .46/1602 .57/1651
AREQ .48/1739 .48/1331 .48/1629 .50/1750 .47/1576 .50/1553 .49/1686
BAHR .55/1670 .52/1508 .00/ 0 .00/ 0 .54/1528 .50/1512 .46/1272
BRMU .00/ 0 .74/1481 .58/1454 .58/1426 .54/1281 .00/ 0 .00/ 0
CAS1 .00/ 0 .00/ 0 .00/ 0 .51/1515 .50/1580 .48/1567 .47/1625
CEDU .00/ 0 .00/ 0 .43/1498 .41/1466 .38/1417 .00/ 0 .00/ 0
CHAT .54/1402 .52/1189 .61/1477 .55/1275 .59/1203 .56/1338 .54/1268
DAV1 .47/1591 .49/1532 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
DRAO .49/1576 .51/1576 .44/1570 .47/1577 .46/1571 .48/1493 .48/1575
EISL .60/1183 .00/ 0 .00/ 0 .70/1337 .64/1371 .60/ 751 .61/1342
FAIR .73/1389 .46/1183 .00/ 0 .61/1483 .60/1443 .58/1377 .54/1526
FORT .55/1135 .56/1276 .72/1137 .63/1236 .73/1073 .71/1250 .00/ 0
GALA .52/1097 .53/1525 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
GUAM .90/1434 .00/ 0 .82/1639 .69/1662 .73/1678 .91/1616 .91/1582
HOB2 .00/ 0 .54/1426 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
HRAO .47/1560 .48/1278 .00/ 0 .53/1509 .00/ 0 .00/ 0 .50/1539
IRKT .58/1531 .55/1282 .53/ 356 .53/ 894 .59/1500 .54/1284 .61/1417
KELY .00/ 0 .00/ 0 .59/1297 .59/1287 .49/ 789 .55/1416 .54/1460
KERG .60/1545 .55/1543 .70/1556 .64/1498 .53/1468 .65/1438 .65/1198
KOKB .71/1514 .61/1315 .62/1593 .72/1406 .72/1135 .75/1346 .68/1554
KOUR .85/1513 .77/ 627 .00/ 0 .85/1521 .82/1498 .70/1549 .48/ 317
KWJ1 .00/ 0 .00/ 0 .00/ 0 .80/1166 .89/1207 .78/1110 .89/1358
LHAS .00/ 0 .49/1435 .53/1559 .51/1517 .54/1573 .53/1373 .57/1501
MAC1 .39/1395 .41/1441 .00/ 0 .37/1606 .37/1266 .00/ 0 .00/ 0
MAG0 .00/ 0 .53/1640 .52/1635 .54/1627 .49/1638 .57/1550 .57/1636
MALI .00/ 0 1.00/ 956 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
MANA .00/ 0 .00/ 0 .78/1702 .90/1707 .83/1290 .74/1372 .84/1435
MAS1 .49/1617 .56/1556 .55/1618 .51/1616 .52/1607 .52/1562 .49/1618
MATE .63/1431 .59/1378 .76/1580 .51/1374 .54/1507 .84/1341 .59/1573
MCM4 .51/1047 .49/ 994 .55/ 977 .52/ 923 .56/ 917 .57/ 943 .56/1037
MDO1 .55/1473 .48/1311 .64/1455 .71/1478 .65/1415 .67/1360 .70/1476
NKLG .84/1677 .78/1259 .76/1779 .80/1762 .00/ 0 .00/ 0 .72/1341
NOUM .47/1611 .54/1531 .65/1492 .60/1680 .63/1565 .70/1606 .60/1676
NRC1 .42/1672 .47/1675 .00/ 0 .39/1666 .42/1669 .56/1547 .52/1669
NRC2 .42/1672 .46/1674 .56/1670 .38/1668 .41/1668 .00/ 0 .52/1671
NTUS .00/ 0 .73/1505 .82/1691 .68/1836 .75/1768 .00/ 0 .93/1768
OHIG .46/1176 .52/1366 .60/1361 .51/ 298 .00/ 0 .00/ 0 .00/ 0
ONSA .64/1655 .53/1483 .50/1655 .45/1643 .55/1654 .51/1564 .54/1643
SANT .55/1511 .60/1243 .61/1556 .63/1632 .67/1610 .60/1565 .56/1619
SEY1 .71/ 990 .00/ 0 .87/1107 .00/ 0 .77/1098 .75/1179 .74/1002
SHAO .60/1104 .72/1132 .58/1085 .00/ 0 .00/ 0 .00/ 0 .00/ 0
STJO .63/1679 .73/1678 .00/ 0 .41/1681 .44/1682 .43/1615 .46/1680
SYOG .00/ 0 .00/ 0 .00/ 0 .00/ 0 .56/1311 .57/1598 .56/1497
TROM .46/1846 .44/1752 .44/1804 .42/1904 .43/1903 .50/1811 .46/1888
TSKB .60/1463 .66/1379 .00/ 0 .00/ 0 .00/ 0 .55/1422 .61/1495
USNO .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .62/1536 .64/1653
YAR1 .36/ 680 .53/ 729 .00/ 0 .39/ 690 .39/1095 .41/ 617 .39/ 832
YELL .53/1646 .51/1547 .00/ 0 .57/1701 .59/1691 .52/1648 .53/1746
PRN01 E .60/1739 .64/1797 .65/1512 .61/2096 .65/1982 .63/1979 .61/2055
PRN02 .51/1722 .50/1886 .55/1579 .60/1934 .53/1995 .61/1884 .61/1952
PRN03 .58/1807 .54/1818 .67/1400 .53/1976 .55/1832 .60/1814 .55/1835
PRN04 .58/2010 .56/2002 .60/1670 .60/2024 .59/2093 .59/2016 .67/2122
PRN05 .57/1960 .55/1994 .57/1500 .53/2115 .58/2139 .46/1474 .65/2232
PRN06 .54/1967 .55/1985 .59/1525 .53/2047 .54/2093 .58/1926 .53/2009
PRN07 .61/1823 .56/2003 .59/1713 .53/1980 .56/2013 .57/1914 .61/2135
PRN08 .59/1779 .52/1830 .59/1502 .56/1886 .55/1982 .60/1697 .54/1871
PRN09 .52/1904 .57/1820 .62/1463 .54/1959 .56/1971 .61/1678 .60/1987
PRN10 .53/1919 .59/1732 .63/1438 .53/1876 .55/1975 .60/1806 .58/2022
PRN11 E .55/1812 .59/1946 .56/1402 .65/2057 .67/1915 .64/1932 .62/2029
PRN13 E .65/1758 .56/1724 .57/1321 .63/2000 .60/1920 .62/1981 .65/2135
PRN14 E .63/1929 .58/2076 .66/1694 .61/2288 .60/2118 .62/1977 .63/2281
PRN17 .52/1785 .54/1702 .63/1402 .56/1763 .56/1808 .56/1736 .59/1781
PRN18 .56/1825 .56/1867 .71/1624 .61/2003 .58/1914 .59/1789 .59/1919
PRN19 .57/1189 .49/1241 .58/ 856 .55/1209 .66/1289 .69/1113 .58/1187
PRN20 .62/1920 .55/2024 .58/1621 .59/2204 .57/2102 .60/2029 .62/2210
PRN21 .54/1844 .61/1734 .59/1633 .61/2038 .56/2029 .72/1777 .58/1865
PRN22 .60/1952 .62/2045 .60/1595 .52/2138 .53/2073 .57/2045 .56/2110
PRN23 .57/1612 .56/1892 .71/1411 .66/1839 .60/1697 .60/1707 .66/1837
PRN24 .54/1933 .58/1977 .65/1686 .59/2001 .54/2084 .00/ 0 .63/2236
PRN25 .55/2064 .61/2246 .61/1759 .56/2388 .56/2401 .59/2178 .59/2312
PRN26 E .56/1652 .60/1610 .76/1400 .57/1726 .58/1798 .66/1632 .70/1798
PRN27 .55/1696 .50/1819 .65/1475 .55/1808 .63/1783 .57/1779 .59/1843
PRN28 .55/1545 .51/1803 .58/1560 .57/1980 .54/1837 .58/1780 .63/1888
PRN29 E .74/2014 .70/2009 .73/1628 .70/2260 .72/2056 .71/2060 .64/2142
PRN30 .56/2019 .53/2010 .58/1707 .58/2168 .59/2203 .55/2040 .61/2232
PRN31 .64/1703 .61/1797 .56/1509 .60/1909 .53/1790 .59/1668 .55/1801
Pseudo Range Statistics
rms (cm) / # obs
01jul15 01jul16 01jul17 01jul18 01jul19 01jul20 01jul21
---------------------------------------------------------------------
ALGO 33/1658 35/1653 35/1653 36/1655 37/1647 40/1602 31/1651
AREQ 24/1739 25/1331 20/1630 25/1750 24/1576 24/1553 23/1686
BAHR 38/1670 31/1508 0/ 0 0/ 0 31/1528 29/1512 31/1272
BRMU 0/ 0 34/1481 34/1454 32/1426 35/1281 0/ 0 0/ 0
CAS1 0/ 0 0/ 0 0/ 0 27/1516 25/1582 26/1568 25/1627
CEDU 0/ 0 0/ 0 37/1279 44/1210 40/1035 0/ 0 0/ 0
CHAT 67/1404 59/1191 70/1481 64/1276 62/1203 63/1338 65/1270
DAV1 26/1595 25/1532 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
DRAO 27/1576 35/1576 31/1570 30/1577 36/1571 32/1493 32/1575
EISL 55/1183 0/ 0 0/ 0 53/1338 58/1371 58/ 751 55/1342
FAIR 47/1395 39/1183 0/ 0 21/1483 30/1443 31/1377 24/1526
FORT 73/1138 0/ 0 0/ 0 0/ 0 65/1074 0/ 0 0/ 0
GALA 24/1097 39/1525 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
GUAM 52/1440 0/ 0 52/1642 50/1665 50/1683 48/1621 48/1583
HOB2 0/ 0 43/1426 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
HRAO 0/ 0 0/ 0 0/ 0 69/1510 0/ 0 0/ 0 0/ 0
IRKT 63/1531 61/1282 57/ 356 57/ 894 60/1500 59/1284 59/1417
KELY 0/ 0 0/ 0 37/1297 33/1287 27/ 789 38/1416 31/1460
KERG 46/1550 47/1545 50/1557 45/1500 46/1468 43/1439 44/1198
KOKB 39/1516 62/1318 39/1594 37/1406 36/1135 35/1346 39/1556
KOUR 34/1514 33/ 628 0/ 0 34/1525 36/1500 34/1550 32/ 317
KWJ1 0/ 0 0/ 0 0/ 0 30/1167 32/1210 43/1114 0/ 0
LHAS 0/ 0 30/1436 29/1559 29/1517 28/1573 30/1373 29/1501
MAC1 35/1394 44/1440 0/ 0 46/1599 40/1266 0/ 0 0/ 0
MAG0 0/ 0 37/1640 37/1635 38/1627 38/1638 37/1550 37/1636
MALI 0/ 0 70/ 957 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
MANA 0/ 0 0/ 0 0/ 0 0/ 0 70/1290 68/1372 72/1436
MAS1 35/1619 36/1557 36/1618 35/1616 35/1607 33/1562 35/1618
MATE 67/1431 69/1378 55/1580 64/1374 67/1507 66/1341 65/1573
MCM4 40/1048 41/ 994 39/ 978 37/ 924 39/ 917 36/ 945 39/1038
MDO1 45/1474 45/1311 39/1455 43/1478 45/1415 42/1361 43/1476
NKLG 69/1682 70/1259 68/1782 68/1768 0/ 0 0/ 0 68/1341
NOUM 53/1613 64/1532 64/1492 55/1681 57/1565 52/1608 53/1677
NRC1 40/1672 45/1675 0/ 0 42/1666 46/1669 46/1547 34/1669
NRC2 38/1672 45/1674 40/1670 40/1668 45/1668 0/ 0 36/1671
NTUS 0/ 0 57/1509 58/1696 58/1840 56/1769 0/ 0 56/1786
OHIG 41/1179 39/1368 39/1362 39/ 298 0/ 0 0/ 0 0/ 0
ONSA 38/1655 37/1483 38/1655 37/1643 38/1654 38/1564 35/1643
SANT 21/1511 17/1243 19/1556 21/1632 23/1610 22/1565 21/1619
SEY1 81/ 991 0/ 0 77/1107 0/ 0 0/ 0 0/ 0 71/1002
SHAO 72/1103 74/1135 67/1088 0/ 0 0/ 0 0/ 0 0/ 0
STJO 27/1679 26/1681 0/ 0 28/1681 27/1682 29/1615 32/1680
SYOG 0/ 0 0/ 0 0/ 0 0/ 0 38/1313 39/1598 41/1497
TROM 36/1846 36/1752 36/1804 37/1904 33/1903 35/1811 34/1888
TSKB 53/1463 44/1380 0/ 0 0/ 0 0/ 0 50/1422 48/1495
USNO 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 38/1536 38/1653
YAR1 59/ 680 70/ 729 0/ 0 52/ 690 0/ 0 53/ 617 65/ 832
YELL 34/1646 36/1547 0/ 0 38/1701 37/1691 34/1648 39/1746
PRN01 E 47/1699 44/1693 42/1404 40/1979 41/1900 40/1889 42/1954
PRN02 52/1681 51/1805 52/1485 48/1840 45/1853 46/1782 47/1864
PRN03 44/1764 45/1709 45/1337 41/1847 39/1746 45/1691 47/1731
PRN04 48/1943 46/1895 47/1563 46/1935 38/1944 40/1933 43/2010
PRN05 44/1894 47/1925 46/1424 44/2048 43/2046 32/1391 41/2122
PRN06 47/1888 46/1825 42/1403 40/1928 43/2001 41/1811 38/1893
PRN07 48/1788 50/1916 53/1610 43/1885 42/1929 42/1835 47/2031
PRN08 48/1732 48/1729 49/1399 42/1749 44/1822 41/1595 44/1773
PRN09 45/1834 40/1733 46/1373 38/1872 43/1869 37/1562 44/1847
PRN10 53/1835 44/1618 45/1359 47/1821 44/1849 43/1698 43/1900
PRN11 E 43/1770 44/1861 43/1314 43/1967 52/1836 43/1854 46/1913
PRN13 E 48/1706 47/1653 44/1262 49/1944 45/1851 42/1947 47/2021
PRN14 E 43/1868 40/2054 41/1590 42/2163 40/2092 37/1946 42/2188
PRN17 50/1720 51/1610 44/1284 46/1651 51/1730 43/1611 45/1675
PRN18 45/1747 43/1738 43/1466 44/1845 43/1868 41/1681 42/1792
PRN19 49/1191 40/1187 49/ 803 38/1152 40/1176 46/1010 43/1115
PRN20 43/1867 45/1973 45/1554 42/2133 41/2056 42/2011 44/2109
PRN21 45/1798 44/1660 42/1479 40/1898 45/1956 46/1673 45/1822
PRN22 46/1896 44/1939 47/1384 44/1952 36/1924 41/1891 42/2013
PRN23 43/1535 53/1795 48/1290 45/1733 43/1684 45/1670 45/1725
PRN24 50/1853 50/1864 52/1590 44/1902 47/1987 0/ 0 48/2129
PRN25 39/2008 43/2138 41/1611 40/2231 41/2338 41/2122 41/2216
PRN26 E 48/1570 43/1513 47/1294 45/1611 43/1673 42/1530 43/1675
PRN27 53/1657 53/1719 52/1377 48/1700 42/1661 42/1652 44/1750
PRN28 49/1492 51/1740 50/1449 46/1835 49/1769 47/1736 44/1793
PRN29 E 43/1997 40/1946 44/1537 42/2094 41/2025 38/1990 42/2065
PRN30 42/1978 42/1950 43/1595 42/2043 41/2108 41/1962 45/2137
PRN31 47/1653 44/1671 48/1314 39/1734 41/1640 40/1526 44/1694
Station Clock Offsets Solution for 0h UT
(microsecond / sigma in ns)
01jul15 01jul16 01jul17 01jul18 01jul19 01jul20 01jul21 sig
------------------------------------------------------------------------
ALGO REF REF REF REF REF REF REF --
AREQ 57.8133 86.4465 115.0678 9.9773 38.5458 67.0260 95.8264 .3
BAHR 762.6769 762.6778 --- --- 762.6819 762.6801 762.6838 .3
BRMU --- -.8740 -.8525 -.8378 -.8871 --- --- .3
CAS1 --- --- --- -.8699 -.8714 -.8872 -.9023 .4
CEDU --- --- -.9850 -.9307 -.8648 --- --- .3
CHAT -.8559 -.8733 -.8627 -.8401 -.8738 -.8723 -.8710 .3
DAV1 -.8757 -.8605 --- --- --- --- --- .3
DRAO -.7038 -.6993 -.6955 -.6932 -.6913 -.6909 -.6887 .3
EISL -.8132 --- --- -.8536 -.8567 -.8761 -.8854 .3
FAIR -.0220 -.0032 --- .0301 .0482 .0672 .0882 .4
FORT -.8108 --- --- --- -.7647 --- --- .4
GALA -.9127* -.9393 --- --- --- --- --- .3
GUAM -.9515 --- -.9607 -.9625 -.9629 -.9586 -.9932 .3
HOB2 --- -5.8084 --- --- --- --- --- .3
HRAO --- --- --- -.9354 --- --- --- .3
IRKT -1.2629 -1.2663 -1.2697 -1.7179* -1.7212 -1.7245 -1.7277 .4
KELY --- --- -.8500 -.8134 -.8538 -.8887 -.9323 .4
KERG 19.6088* 19.4723* 19.3370* 19.2171* 19.0862* 18.9545* 18.8268* .3
KOKB .0498 .0479 .0473 .0453 .0415 .0433 .0414 .5
KOUR -.9469 -.9338 --- -.9447 -.9511 -.9512 -.9613 .4
KWJ1 --- --- --- -.8843* -.9402* -.8667* --- .7
LHAS --- -.8611 -.8984 -.8687 -.8833 -.8886 -.9012 .4
MAC1 -.8834 -.8790 --- -.8583 -.8850 --- --- .3
MAG0 --- -.9403* -.9547* -.9511* -.9594* -.9606* -.9613* .3
MALI --- 334.1879 --- --- --- --- --- .4
MANA --- --- --- --- 988.0391 517.8682 136.1402 .5
MAS1 58.4209 58.4248 58.4128 58.4085 58.3843 58.3883 58.3878 .3
MATE 970.5142* 970.4871* 970.4598* 970.4347* 970.4066* 970.3783* 970.3511* .3
MCM4 12.8886 35.0676* 9.3745* 18.3388 40.3416 62.6178 85.3207* .7
MDO1 -5.0744 -5.5427 -5.7967 -6.0033 -1.3164 -.8694* -1.2648 .4
NKLG 697.9603 580.0958 463.8667 351.8759 --- --- 42.4698 .7
NOUM 495.5847 810.5820 747.3803 166.5337 611.4968 927.5594 694.7021 .3
NRC1 -.9623 -.9701 --- -.9863 -.9946 -1.0026 -1.0098 .3
NRC2 -2.7698 -2.8308 -2.8923 -2.9550 -3.0183 --- -3.1445 .3
NTUS --- -.8683 -.8710 -.8791 -.8759 --- -.9039 .3
OHIG -.8528 -.8713 -.8654 -.8570 --- --- --- .4
ONSA 318.3453 318.2844 318.2253 318.1666 318.1072 318.0480 317.9896 .3
SANT -.9357 -.9250* -.9634* -.9478* -.9460* -.9481 -.9494 .3
SEY1 -.8890 --- -.8644 --- --- --- -.9012 .4
SHAO -.8593 -.8683 -.8685 --- --- --- --- .5
STJO -2.3368 -2.3506 --- -2.3298 -2.3399 -2.3271 -2.3000 .3
SYOG --- --- --- --- 285.2295* 285.2206* 285.2234* .3
TROM -.8721 -.8763 -.8519 -.8779 -.8786 -.8854 -.8911 .3
TSKB -2.3656 -2.3750 --- --- --- -2.4250 -2.4367 .3
USNO --- --- --- --- --- -.2488 -.2533 .3
YAR1 -.6302* -2.4517 --- -3.3802* --- -2.4587 -1.5803* .8
YELL -.5687 -.5442 --- -.4954 -.4712 -.4473 -.4215 .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 AREQ BAHR BRMU CAS1 CEDU CHAT DAV1 DRAO EISL FAIR FORT GALA GUAM
global: HOB2 HRAO IRKT KELY KERG KOKB KOUR KWJ1 LHAS MAC1 MAG0 MALI MANA MAS1
global: MATE MCM4 MDO1 NKLG NOUM NRC1 NRC2 NTUS OHIG ONSA SANT SEY1 SHAO STJO
global: SYOG TROM TSKB USNO YAR1 YELL
--
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: pierre at geod.nrcan.gc.ca
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