[IGSREPORT-8965] Wk 1148 EMR Analysis Report
Pierre Tetreault
pierre at geod.nrcan.gc.ca
Tue Jan 22 10:20:01 PST 2002
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IGS Electronic Report 22 Jan 10:20:10 PST 2002 Message Number 8965
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Author: NRCan/GSDivision
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EMR ANALYSIS REPORT GPS-WEEK 1148 Dates: 02jan06 to 02jan12
********************************************************************************
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
EMR11480-6.SP3 GPS ephem. files for days 0-6, week #1148 in sp3 format
EMR11487.ERP pole x,y and DUT1 solutions for week #1148
EMR11487.SNX station and EOP weekly combined solution in SINEX format
EMR11487.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 1826.1 ns (52280) & 14.2 ns/day w.r.t.
GPS time
2. Date | PRN | Action | Period | Reason
+--------+-------+--------+----------------+----------------------------+
02jan08 15 R 20:00 to 23:45 Modeling Problems
02jan09 21 R 21:00 to 23:45 Modeling Problems
02jan11 23 E 00:00 to 23:45 Modeling problems
02jan12 15 E 00:00 to 23:45 Modeling problems
17 R 20:00 to 23:45 Modeling Problems
24 R 22:00 to 23:45 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 020121
2. Software used : GIPSY/OASIS II (UNIX )
3. Definition of Terrestrial frame:
origin and orientation : Nominally IGS00
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
02jan06 02jan07 02jan08 02jan09 02jan10 02jan11 02jan12
---------------------------------------------------------------------
ALGO .38/2390 .39/2388 .41/2383 .43/2388 .44/2312 .38/2262 .39/2309
ARTU .44/2319 .46/2338 .44/2329 .42/2324 .43/2321 .44/2311 .44/2266
AUCK .60/2271 .49/2050 .50/2099 .73/2232 .56/1981 .00/ 0 .00/ 0
BAHR .54/2520 .57/2316 .69/2323 .57/2305 .00/ 0 .64/2344 .60/2404
BILI .50/2672 .50/2312 .51/2602 .50/2427 .48/2205 .51/2404 .56/2475
BRMU .44/2006 .57/2060 .63/2076 .57/2140 .45/2126 .46/2071 .52/2147
CAS1 .44/2726 .44/2421 .47/2417 .46/2664 .44/2287 .43/2154 .44/2396
COCO .60/2408 .68/2675 .69/2662 .00/ 0 .00/ 0 .75/2366 .00/ 0
DAV1 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .41/2330 .41/2316
DRAO .45/2376 .47/2318 .46/2378 .45/2311 .43/2312 .47/2298 .50/2307
EISL .63/1390 .49/1501 .00/ 0 .00/ 0 .44/1567 .49/1345 .65/1645
FAIR .45/1996 .46/1934 .45/1903 .47/1991 .51/1466 .00/ 0 .47/1718
FORT .68/1230 .00/ 0 .67/1297 .76/1344 .64/1303 .73/ 690 .67/1163
GUAM .00/ 0 .82/2479 1.02/2468 .00/ 0 .00/ 0 .00/ 0 .85/2433
GUAT .53/2186 .54/2349 .56/2245 .53/2289 .50/1928 .50/2438 .60/2357
HOB2 .54/2210 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
HRAO .60/2298 .55/2281 .63/2341 .60/2376 .54/2096 .00/ 0 .00/ 0
IISC .00/ 0 .00/ 0 .00/ 0 .68/1262 .62/2472 .62/2182 .00/ 0
IRKT .56/2320 .56/2308 .56/2247 .53/2284 .52/2203 .52/2118 .55/2194
KELY .00/ 0 .00/ 0 .00/ 0 .55/1867 .54/ 383 .00/ 0 .00/ 0
KERG .70/2415 .77/2375 .00/ 0 .00/ 0 .00/ 0 .57/2218 .74/2243
KUNM .55/1645 .62/1590 .59/1223 .61/1685 .54/1546 .50/1052 .53/1344
KWJ1 .00/ 0 .75/1695 .59/1955 .51/1868 .51/1518 .56/1556 .58/1601
MAC1 .00/ 0 .38/1585 .38/2082 .38/2017 .35/1216 .38/1519 .38/1967
MAS1 .71/2292 .51/2330 .51/2335 .55/2077 .55/1995 .50/2304 .45/1957
MATE .48/2316 .49/2317 .48/2328 .45/2083 .47/2310 .47/2321 .46/2260
MCM4 .40/1260 .36/1734 .37/1795 .37/2550 .35/1689 .36/1607 .40/2104
MDO1 .45/2018 .42/1951 .43/2068 .46/2124 .43/1738 .39/1824 .42/1872
MKEA .68/2328 .72/2390 .70/2381 .66/2328 .66/2102 .65/2244 .71/2203
MSKU .86/2472 .74/2346 .69/2768 .87/2433 .71/2530 .65/2243 .00/ 0
NKLG .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .78/2630
NOUM .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .58/1956
NRC1 .33/2414 .34/2417 .35/2412 .39/2412 .36/2233 .33/2301 .32/2330
NRC2 .33/2416 .34/2421 .34/2412 .39/2411 .36/2331 .33/2305 .32/2336
NRIL .44/2424 .46/2464 .47/2182 .43/2300 .48/1853 .53/1969 .52/1957
NYAL .47/2343 .52/2248 .47/2213 .51/2643 .48/1709 .43/1518 .40/1272
OHIG .00/ 0 .47/2429 .47/2384 .45/2548 .46/2602 .48/2440 .52/2129
ONSA .47/2404 .47/2420 .49/2422 .48/2420 .47/2380 .44/2428 .45/2359
PERT .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .46/1857
SANT .54/2373 .51/2306 .53/2379 .55/2268 .52/2008 .52/2321 .00/ 0
SHAO .55/1920 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
STJO .42/2415 .47/2418 .52/2412 .45/2281 .45/2278 .45/2344 .43/2111
SUTH .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .48/2033 .48/2112
TIDB .00/ 0 .00/ 0 .00/ 0 .54/2417 .53/2219 .00/ 0 .00/ 0
TOW2 .65/2582 .00/ 0 .67/2572 .00/ 0 .00/ 0 .00/ 0 .00/ 0
TSKB .43/1953 .48/1988 .45/1863 .46/1960 .43/1810 .42/1644 .48/1743
USNO .49/2409 .45/2410 .44/2390 .50/2417 .47/2349 .53/2309 .45/2333
VILL .55/2336 .51/2368 .46/2352 .50/2360 .48/2334 .45/2172 .49/2292
YAR1 .39/1948 .42/2061 .45/1912 .48/2119 .38/1546 .44/1557 .00/ 0
YELL .47/2418 .48/2196 .45/2273 .47/2527 .43/1714 .43/1690 .45/1922
PRN01 E .67/2820 .65/2853 .68/2797 .66/2796 .58/2582 .59/2690 .64/2553
PRN02 .49/2983 .50/3064 .50/2926 .48/2880 .45/2641 .48/2817 .51/2847
PRN03 .53/2832 .55/2902 .49/2850 .50/2834 .48/2467 .51/2760 .48/2802
PRN04 E .47/3639 .51/3569 .55/3687 .52/3674 .47/3396 .52/3445 .52/3314
PRN05 .52/3336 .50/3412 .51/3374 .54/3354 .49/3036 .46/3157 .48/3105
PRN06 .52/3155 .55/3107 .54/3294 .49/3212 .49/2814 .48/2795 .53/3041
PRN07 .50/3488 .49/3323 .52/3353 .50/3292 .48/3209 .48/3251 .48/3066
PRN08 .49/2696 .47/2627 .50/2650 .48/2694 .45/2398 .46/2657 .53/2693
PRN09 .49/3070 .49/3213 .51/3227 .52/3236 .50/2884 .46/2934 .52/2959
PRN10 .51/3140 .48/3154 .55/3263 .50/3308 .52/2979 .46/2868 .50/3114
PRN11 E .52/3132 .56/3169 .56/2997 .54/3100 .51/2897 .52/3077 .56/2910
PRN13 E .56/3196 .53/3208 .56/3243 .54/3175 .50/2868 .52/3064 .52/3049
PRN14 E .57/2927 .56/3013 .54/3216 .56/2989 .51/2726 .52/2716 .55/3010
PRN15 .50/2649 .49/2639 .57/2660 .47/2855 .44/2284 .51/2035 .00/ 0
PRN17 .51/2877 .55/2420 .56/2775 .51/2819 .48/2427 .52/2626 .53/2802
PRN18 .55/3119 .53/3028 .53/3213 .50/3000 .49/2678 .51/2641 .54/2865
PRN20 .52/3443 .54/3518 .56/3488 .55/3324 .51/3180 .50/3385 .52/3210
PRN21 .53/3012 .53/2989 .53/3050 .52/3073 .47/1766 .49/2463 .56/2873
PRN22 .50/3030 .54/3096 .59/2991 .53/2959 .47/2684 .50/3003 .50/3076
PRN23 .55/3093 .52/2614 .53/1633 .48/1675 .38/1473 .00/ 0 .42/1771
PRN24 .40/2169 .51/2501 .53/3569 .50/3622 .55/3203 .48/3378 .56/3383
PRN25 .55/3246 .52/3321 .52/3174 .54/3204 .48/2880 .53/3099 .54/3215
PRN26 E .57/2682 .55/2717 .61/2754 .52/2725 .50/2472 .48/2476 .63/2693
PRN27 .48/2681 .52/2681 .48/2681 .46/2731 .44/2430 .47/2660 .51/2798
PRN28 .53/2981 .47/2936 .47/2893 .49/2927 .47/2692 .43/2688 .47/2927
PRN29 E .68/2884 .69/2800 .64/2925 .64/2911 .57/2584 .60/2588 .56/2914
PRN30 .56/3298 .57/3383 .55/3346 .56/3268 .52/2898 .51/3257 .53/3229
PRN31 .49/2841 .53/2932 .50/2854 .49/2815 .44/2424 .48/2702 .49/2801
Pseudo Range Statistics
rms (cm) / # obs
02jan06 02jan07 02jan08 02jan09 02jan10 02jan11 02jan12
---------------------------------------------------------------------
ALGO 32/2390 31/2388 33/2383 39/2387 59/2312 33/2262 32/2308
ARTU 36/2319 36/2338 35/2329 35/2324 36/2321 36/2311 38/2266
AUCK 48/2271 50/2050 48/2099 45/2234 48/1981 0/ 0 0/ 0
BAHR 30/2520 37/2316 29/2323 29/2305 0/ 0 28/2344 29/2404
BILI 36/2673 36/2313 36/2602 36/2427 36/2205 38/2348 39/2426
BRMU 55/2006 56/2060 55/2076 52/2140 57/2127 57/2072 56/2147
CAS1 25/2726 24/2421 23/2417 25/2664 24/2287 25/2154 25/2396
COCO 21/2422 19/2685 20/2662 0/ 0 0/ 0 20/2379 0/ 0
DAV1 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 35/2330 60/2316
DRAO 32/2376 32/2318 34/2378 41/2311 34/2312 37/2298 33/2307
EISL 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 59/ 510 0/ 0
FAIR 22/1997 23/1934 22/1906 33/1992 38/1466 0/ 0 23/1720
FORT 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 70/ 690 0/ 0
GUAM 0/ 0 37/2481 32/2481 0/ 0 0/ 0 0/ 0 56/2440
HOB2 46/2210 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
IISC 0/ 0 0/ 0 0/ 0 63/1263 63/2472 65/2182 0/ 0
IRKT 55/2320 61/2309 61/2247 60/2284 64/2203 0/ 0 65/2195
KELY 0/ 0 0/ 0 0/ 0 30/1867 35/ 383 0/ 0 0/ 0
KERG 0/ 0 69/2375 0/ 0 0/ 0 0/ 0 61/2218 66/2243
KUNM 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 85/1052 0/ 0
KWJ1 0/ 0 93/1680 34/1955 34/1868 35/1518 36/1557 40/1601
MAC1 0/ 0 41/1583 42/2074 32/2004 43/1211 44/1516 43/1960
MAS1 46/2292 44/2330 44/2335 45/2077 44/1995 45/2304 44/1957
MATE 0/ 0 0/ 0 0/ 0 62/2083 0/ 0 0/ 0 0/ 0
MCM4 38/1257 48/1733 54/1794 52/2548 51/1689 52/1606 48/2102
MDO1 65/2018 68/1951 56/2068 63/2124 62/1738 70/1824 71/1872
MKEA 27/2330 26/2391 25/2382 26/2328 27/2102 27/2245 28/2204
MSKU 36/2476 36/2346 37/2768 37/2452 37/2530 35/2243 0/ 0
NRC1 37/2414 43/2417 66/2412 44/2412 42/2233 37/2301 37/2330
NRC2 39/2416 49/2421 0/ 0 46/2411 46/2331 40/2305 41/2336
NRIL 22/2424 21/2464 21/2182 22/2300 23/1853 22/1969 22/1957
NYAL 36/2343 38/2248 37/2213 38/2643 37/1709 38/1518 36/1272
OHIG 0/ 0 53/2429 51/2384 53/2548 57/2602 54/2440 56/2129
ONSA 47/2404 45/2420 46/2422 45/2420 46/2380 46/2428 46/2350
PERT 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 66/1856
SANT 39/2373 34/2306 31/2379 40/2268 34/2008 39/2321 0/ 0
STJO 27/2414 30/2416 35/2411 32/2280 30/2275 33/2341 32/2110
SUTH 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 60/2033 0/ 0
TIDB 0/ 0 0/ 0 0/ 0 29/2417 28/2219 0/ 0 0/ 0
TOW2 21/2582 0/ 0 21/2573 0/ 0 0/ 0 0/ 0 0/ 0
TSKB 60/1953 59/1988 61/1863 60/1960 60/1810 61/1644 66/1743
USNO 45/2409 45/2410 43/2390 43/2416 43/2349 42/2309 45/2333
VILL 44/2336 41/2368 39/2352 40/2360 38/2334 40/2172 39/2292
YAR1 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 63/1557 0/ 0
YELL 37/2418 37/2196 37/2273 36/2527 35/1714 37/1690 40/1922
PRN01 E 41/2266 45/2424 41/2302 44/2514 45/2182 46/2343 49/2081
PRN02 41/2310 45/2612 43/2431 44/2517 48/2185 46/2556 52/2196
PRN03 41/2117 43/2418 44/2392 46/2470 48/2047 47/2515 49/2241
PRN04 E 39/2974 42/3097 39/3045 42/3253 44/2872 46/3112 43/2718
PRN05 37/2793 45/3010 38/2881 42/3016 44/2611 42/2851 43/2623
PRN06 41/2568 48/2691 43/2787 43/2869 44/2386 41/2484 44/2568
PRN07 41/2883 42/2902 38/2801 40/2885 40/2691 47/2901 47/2402
PRN08 43/2097 47/2239 42/2186 44/2343 44/1948 44/2403 55/2121
PRN09 40/2444 51/2758 40/2732 44/2883 45/2395 44/2607 46/2363
PRN10 37/2556 42/2718 40/2769 41/2949 45/2475 46/2562 43/2508
PRN11 E 41/2445 43/2680 39/2516 44/2799 46/2447 43/2762 44/2303
PRN13 E 41/2587 44/2784 43/2672 46/2802 49/2377 46/2740 45/2439
PRN14 E 40/2203 44/2560 40/2647 42/2566 44/2250 44/2413 46/2336
PRN15 36/2157 41/2318 38/2206 39/2554 45/1990 42/1846 0/ 0
PRN17 36/2287 40/2085 37/2319 40/2495 46/2045 49/2409 51/2265
PRN18 36/2348 49/2507 43/2624 39/2570 42/2181 46/2397 42/2217
PRN20 41/2815 44/3033 43/2900 44/2995 44/2707 46/2983 45/2551
PRN21 37/2338 43/2525 38/2540 38/2707 40/1427 44/2237 43/2306
PRN22 40/2334 42/2609 41/2541 42/2579 45/2243 46/2796 47/2558
PRN23 38/2451 48/2177 40/1436 38/1487 40/1254 0/ 0 38/1532
PRN24 35/1902 38/2278 36/2958 41/3204 42/2710 44/3017 42/2721
PRN25 39/2515 41/2792 37/2676 42/2833 41/2396 42/2781 43/2576
PRN26 E 35/2108 46/2318 35/2350 37/2410 39/1987 39/2223 46/2150
PRN27 38/2103 45/2271 41/2217 46/2399 47/1999 45/2404 51/2187
PRN28 46/2408 49/2548 46/2427 47/2578 44/2244 51/2447 50/2331
PRN29 E 37/2224 42/2342 42/2492 42/2519 40/2136 45/2254 44/2261
PRN30 39/2698 47/2939 41/2886 45/2974 46/2468 45/2931 43/2670
PRN31 41/2158 44/2450 43/2400 41/2474 48/2016 46/2499 48/2270
Station Clock Offsets Solution for 0h UT
(microsecond / sigma in ns)
02jan06 02jan07 02jan08 02jan09 02jan10 02jan11 02jan12 sig
------------------------------------------------------------------------
ALGO REF REF REF REF REF REF REF --
ARTU -1.8753* -1.8994* -1.9197* -1.9232* -1.9397* -1.9526* -1.9749* .3
AUCK -1.9822* -1.9876* -1.9866* -2.0040* -2.0144* --- --- .3
BAHR 929.1130 929.1006 929.0860 929.0727 --- 929.0575 929.0442 .3
BILI -1.9206* -1.9441* -1.9538* -1.9494* -1.9584* -1.9773* -2.0081* .3
BRMU -1.8581 -1.8251 -1.8546 -1.9064 -1.8823 -1.8889 -1.9048 .2
CAS1 -1.8388 -1.8564 -1.8629 -1.8717 -1.8797 -1.8957 -1.9175 .3
COCO -1.8399 -1.8379 -1.8609 --- --- -1.9024 --- .3
DAV1 --- --- --- --- --- -1.8826 -1.9080 .3
DRAO -1.1380 -1.1513 -1.1652 -1.1777 -1.1879 -1.2006 -1.2151 .2
EISL --- --- --- --- --- -1.8667 --- .4
FAIR -1.6945 -1.6984 -1.7017 -1.7034 -1.7070 --- -1.7064 .6
FORT --- --- --- --- --- -2.9283 --- .4
GUAM --- -1.9926 -2.0176 --- --- --- -2.0793 .3
HOB2 1.3383 --- --- --- --- --- --- .3
IISC --- --- --- --- -1.9185 -1.9413 --- .3
IRKT -1.6488 -1.6685 -1.6856 -1.7036 -1.7188 --- -1.7572 .3
KELY --- --- --- -1.9364 --- --- --- .2
KERG --- 860.0746* --- --- --- 859.4910* 859.3414* .3
KUNM --- --- --- --- --- -1.9305 --- .7
KWJ1 --- -1.9431* -2.1698* -2.1552* -1.8331* -2.4056* -2.0613* .8
MAC1 --- -1.8751 -1.9001 -1.8579 -1.9087 -1.9381 -1.8440 .3
MAS1 403.5471 403.5148 403.4747 403.4233 403.3556 403.2959 403.2417 .3
MATE --- --- --- 789.9140 --- --- --- .3
MCM4 -.8070 -1.6703* .4042 28.9445 57.4675 85.8535 14.6494 .4
MDO1 -4.3215 -5.4737 -6.7552 -2.0931 -3.1860 -1.6452 -2.2468 .3
MKEA -2.0278 -2.0368 -2.0038 -2.0079 -1.9697 -2.0536 -2.1004 .3
MSKU -1.9350 -1.9477 -1.9613 -1.9853 -1.9923 -2.0229 --- .3
NRC1 -2.0243 -2.0438 -2.0648 -2.0830 -2.1001 -2.1189 -2.1395 .2
NRC2 -2.3710 -2.3905 --- -2.4297 -2.4466 -2.4654 -2.4860 .2
NRIL -1.8955 -1.9098 -1.9386 -1.0626* -1.9428 -1.9572 -1.9774 .3
NYAL -2.0463 -2.0712* -2.0935 -2.1134 -2.1315* -2.1518 -2.1765 .3
OHIG --- -1.8439 -1.8537 -1.8609 -1.8793 -1.9021 -1.8930 .3
ONSA 148.5505 148.5146 148.4779 148.4436 148.4105 148.3756 148.3389 .2
PERT --- --- --- --- --- --- -1.9851 .3
SANT -1.9707 -1.9763* -1.9849 -1.9979 -2.0060 -2.0246 --- .3
STJO -2.3346 -2.3825 -2.4514 -2.5214 -2.5951 -2.6880 -2.7828 .2
SUTH --- --- --- --- --- -1.9016 --- .3
TIDB --- --- --- 96.0511 96.0473 --- --- .3
TOW2 -1.8378 --- -1.8626 --- --- --- --- .3
TSKB -3.3315 -3.3623 -3.3849 -3.4081 -3.4334 -3.4496 -3.4600 .4
USNO -1.8080 -1.8235 -1.8389 -1.8531 -1.8656 -1.8800 -1.8973 .2
VILL -1.8670 -1.8899 -1.9082 -1.9193 -1.9293 -1.9524 -1.9647 .2
YAR1 --- --- --- --- --- -3.3745* --- .3
YELL -1.5966 -1.6080 -1.6186* -1.6286 -1.6372 -1.6473 -1.6601 .4
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 ARTU AUCK BAHR BILI BRMU CAS1 COCO DAV1 DRAO EISL FAIR FORT GUAM
global: GUAT HOB2 HRAO IISC IRKT KELY KERG KUNM KWJ1 MAC1 MAS1 MATE MCM4 MDO1
global: MKEA MSKU NKLG NOUM NRC1 NRC2 NRIL NYAL OHIG ONSA PERT SANT SHAO STJO
global: SUTH TIDB TOW2 TSKB USNO VILL YAR1 YELL
--
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: pierre at geod.nrcan.gc.ca
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