[IGSREPORT-11013] Wk 1255 EMR Analysis Report
Pierre Tetreault
pierre at geod.nrcan.gc.ca
Thu Feb 5 07:50:44 PST 2004
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IGS Electronic Report 05 Feb 07:50:54 PST 2004 Message Number 11013
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Author: NRCan/GSDivision
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EMR ANALYSIS REPORT GPS-WEEK 1255 Dates: 04jan25 to 04jan31
********************************************************************************
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
EMR12550-6.SP3 GPS ephem. files for days 0-6, week #1255 in sp3 format
EMR12557.ERP pole x,y and DUT1 solutions for week #1255
EMR12557.SNX station and EOP weekly combined solution in SINEX format
EMR12557.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 933.4 ns (53029) & 23.5 ns/day w.r.t.
GPS time
NRC1 clock error & drift were about 127.4 ns (53030) & 1.1 ns/day w.r.t.
GPS time
2. Date | PRN | Action | Period | Reason
+--------+-------+--------+----------------+----------------------------+
04jan29 | 24 | R | 00:00 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 040204
2. Software used : GIPSY/OASIS II (UNIX )
3. Definition of Terrestrial frame:
origin and orientation : Nominally IGb00
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 5 min. normal point interval; single
day (24h) arc with 6 IC and 3 rad. parameters per satellite
5. See IGS Mail#3708 (January 23, 2002), IGS Mail#928 (April 05, 1995)
and IGS Report#1488 (January 16, 1995) for more details regarding NRCan
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
04jan25 04jan26 04jan27 04jan28 04jan29 04jan30 04jan31
---------------------------------------------------------------------
ALGO .39/2519 .39/2529 .41/2551 .43/2516 .44/2541 .43/2559 .43/2543
ALRT .00/ 0 .00/ 0 .00/ 0 .00/ 0 .44/2782 .45/3094 .44/3083
ARTU .43/2476 .44/2531 .45/2570 .44/2522 .44/2523 .46/2602 .43/2532
ASC1 .48/2013 .60/2562 .60/2458 .55/2123 .00/ 0 .00/ 0 .57/2783
AUCK .49/2295 .49/2406 .54/2411 .49/2343 .52/2380 .56/2375 .51/2404
BAHR .61/2345 .79/2484 .55/2636 .48/2634 .49/2650 .47/2645 .47/2649
CAS1 .41/2126 .43/2449 .42/2531 .43/2723 .44/2716 .45/2549 .47/2502
CEDU .46/2614 .45/2484 .44/2489 .42/2515 .47/2520 .48/2489 .43/2587
COCO .63/2681 .60/2464 .61/2552 .69/2323 .81/2654 .81/2357 .84/2458
CORD .54/1681 .54/2181 .57/1726 .61/2148 .59/1747 .58/2126 .63/1992
CRO1 .52/2141 .50/2273 .53/1967 .00/ 0 .00/ 0 .00/ 0 .00/ 0
DAV1 .36/1527 .39/2483 .46/2488 .41/2541 .42/2663 .42/2457 .40/2580
DRAO .40/2635 .40/2633 .36/2544 .42/2600 .48/2618 .54/2636 .45/2640
FAIR .56/2111 .58/2629 .61/2653 .62/2581 .62/2764 .62/2716 .63/2809
GOL2 .39/2497 .38/2574 .37/2547 .42/2499 .39/2467 .42/2568 .45/2578
GUAM .00/ 0 .00/ 0 .00/ 0 .00/ 0 .71/2600 .68/2503 .00/ 0
GUAT .52/2475 .48/2183 .50/2411 .58/ 512 .53/2148 .55/2382 .55/2696
HNLC .61/1135 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
HOB2 .48/2603 .51/2460 .57/2274 .61/2505 .65/2593 .59/2467 .49/2584
IISC .00/ 0 .00/ 0 .68/2642 .64/2619 .62/2770 .72/2351 .00/ 0
KELY .66/1695 .70/1764 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0
KOUR .70/1818 .66/2071 .59/2412 .69/2313 .72/1736 .70/2260 .76/1890
KUNM .00/ 0 .00/ 0 .00/ 0 .00/ 0 .67/1897 .66/1873 .65/1600
MAG0 .53/2518 .52/2600 .51/2583 .53/2571 .53/2569 .56/2689 .52/2693
MAS1 .46/2341 .44/2493 .42/2527 .44/2514 .52/2383 .47/2526 .43/2537
MATE .50/2460 .52/2446 .56/2461 .58/2440 .53/2248 .54/2427 .51/2412
MAUI .00/ 0 .50/2213 .46/2236 .46/2383 .51/2430 .45/2670 .47/2540
MCM4 .33/1770 .34/2104 .34/2390 .35/2392 .36/2059 .35/1726 .35/1987
NRC1 .35/2478 .37/2564 .40/2584 .39/2552 .39/2420 .39/2551 .37/2575
NRIL .54/2157 .45/2264 .45/2635 .44/2489 .41/2950 .42/2581 .39/2972
OHI2 .49/2552 .46/2613 .44/2475 .47/2568 .48/2545 .47/2628 .50/2637
PERT .54/1859 .60/2390 .52/2278 .55/2364 .68/2559 .55/2458 .53/2550
PIMO .55/2482 .55/2176 .52/1852 .56/2126 .54/2592 .56/2529 .59/2624
POL2 .40/2528 .43/2266 .41/2538 .40/2275 .38/2534 .38/2529 .40/2522
RBAY .51/1404 .51/1675 .50/2019 .52/1876 .62/2217 .54/2009 .55/2050
REUN .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .68/1537
STJO .39/2448 .42/2617 .42/2613 .40/2577 .42/2489 .39/2613 .39/2613
THTI .00/ 0 .00/ 0 .00/ 0 .69/2234 .00/ 0 .00/ 0 .00/ 0
TOW2 .60/2677 .54/2555 .56/2431 .62/2495 .69/2597 .67/2533 .67/2476
TRAB .53/2068 .52/2427 .51/2259 .51/2466 .52/2213 .53/2422 .52/2222
TROM .37/2015 .43/2324 .40/2587 .42/2753 .41/2879 .39/2878 .39/2953
TSKB .46/2412 .46/2556 .49/2628 .48/2540 .46/2544 .46/2577 .47/2327
ULAB .48/2175 .46/2458 .44/1826 .45/2475 .46/2181 .44/2478 .48/2232
USNO .50/2493 .55/2576 .58/1282 .59/1492 .59/ 800 .55/2576 .58/2574
VILL .49/2348 .55/2549 .63/2469 .51/2539 .48/2413 .49/2539 .48/2547
WSRT .37/2588 .38/2585 .36/2591 .40/2315 .00/ 0 .00/ 0 .00/ 0
YELL .39/2094 .42/2444 .41/2368 .43/2578 .46/2684 .42/2554 .43/2733
PRN01 .50/3295 .52/3617 .48/3628 .47/3547 .51/3800 .50/3865 .50/3703
PRN02 .49/3404 .50/3521 .48/3539 .50/3614 .53/3832 .51/3918 .50/3670
PRN03 .48/3146 .47/3300 .45/2873 .50/3353 .52/3670 .49/3601 .48/3606
PRN04 .48/3536 .49/3629 .50/3545 .49/3462 .50/3218 .53/3562 .54/3699
PRN05 .47/3128 .47/3268 .50/3201 .50/3089 .53/3053 .50/3045 .51/3158
PRN06 .51/3267 .48/3519 .47/3559 .54/3582 .49/3310 .52/3463 .53/3522
PRN07 .46/3286 .51/3330 .50/3271 .51/3172 .51/3260 .54/3224 .52/3299
PRN08 E .47/2970 .52/2941 .51/3098 .53/3159 .55/3106 .59/3263 .50/3000
PRN09 E .46/1703 .49/2758 .58/2431 .53/2691 .49/2610 .54/2891 .53/2893
PRN10 .47/3626 .49/3622 .48/3605 .49/3463 .50/3724 .49/3680 .53/3853
PRN11 .48/2806 .50/3210 .51/3401 .51/3343 .52/3365 .53/3446 .49/3351
PRN13 .51/3585 .51/3623 .48/3668 .51/3490 .52/3506 .55/3776 .52/3688
PRN14 .50/3032 .51/3414 .47/3441 .49/3448 .53/3371 .52/3387 .52/3305
PRN15 .49/3049 .50/3451 .48/3417 .52/3515 .51/3599 .52/3631 .52/3484
PRN16 .49/3230 .49/3467 .49/3529 .43/2830 .50/3748 .49/3872 .49/3620
PRN17 E .53/2575 .50/3386 .48/3462 .52/3440 .51/3509 .52/3615 .52/3653
PRN18 .48/2994 .47/3316 .47/3121 .49/3304 .50/3308 .47/3125 .51/3394
PRN20 .50/3232 .52/3410 .50/3433 .49/3350 .53/3377 .54/3510 .51/3503
PRN21 .49/3171 .46/3219 .47/3390 .48/3357 .52/3492 .46/3409 .50/3411
PRN22 .58/2702 .60/2970 .55/2320 .61/3094 .63/3093 .62/2860 .61/3025
PRN23 .51/2997 .52/3408 .50/3398 .55/3458 .55/3439 .55/3403 .53/3327
PRN24 .50/3464 .49/3659 .50/3650 .51/2919 .63/2566 .52/3643 .49/3515
PRN25 E .57/2630 .62/3320 .56/3360 .51/3109 .56/3404 .51/3211 .51/3342
PRN26 .45/3162 .44/3300 .44/3341 .51/3353 .52/3387 .50/3314 .49/3455
PRN27 E .47/2643 .55/3107 .56/2772 .50/2566 .51/2950 .50/3049 .48/3063
PRN28 .44/3087 .47/3274 .49/3163 .47/3246 .49/3225 .49/3233 .51/3319
PRN29 .45/3357 .47/3464 .47/3469 .50/3313 .64/3265 .60/3486 .51/3561
PRN30 .50/3129 .47/3244 .49/3291 .50/3306 .49/3208 .51/3262 .51/3256
PRN31 .50/3048 .50/2308 .50/3118 .50/3458 .54/3680 .53/3758 .51/3548
Pseudo Range Statistics
rms (cm) / # obs
04jan25 04jan26 04jan27 04jan28 04jan29 04jan30 04jan31
---------------------------------------------------------------------
ALGO 108/2519 0/ 0 37/2551 43/2516 41/2541 39/2559 42/2543
ALRT 0/ 0 0/ 0 0/ 0 0/ 0 19/2782 18/3094 18/3083
ARTU 23/2476 23/2531 23/2570 23/2522 24/2523 23/2602 23/2532
ASC1 0/ 0 0/ 0 79/2458 81/2122 0/ 0 0/ 0 0/ 0
AUCK 49/2227 48/2408 47/2413 49/2344 49/2380 50/2375 47/2404
BAHR 62/2347 60/2487 61/2636 63/2634 49/2651 46/2646 41/2649
CAS1 26/2126 26/2449 27/2531 25/2723 25/2716 25/2549 25/2502
CEDU 41/2614 43/2484 61/2489 63/2515 60/2520 54/2489 59/2587
COCO 22/2683 21/2464 24/2552 28/2327 26/2664 20/2361 24/2472
CORD 56/1681 56/2182 52/1726 53/2148 51/1747 49/2127 45/1993
CRO1 39/2142 40/2273 40/1968 0/ 0 0/ 0 0/ 0 0/ 0
DAV1 59/1527 54/2483 48/2489 43/2541 39/2663 0/ 0 55/2574
DRAO 35/2635 32/2633 30/2544 29/2600 36/2618 36/2635 38/2640
FAIR 26/2111 25/2629 28/2653 27/2581 29/2764 49/2717 28/2809
GOL2 42/2467 44/2564 44/2547 43/2499 42/2467 42/2568 42/2578
GUAM 0/ 0 0/ 0 0/ 0 0/ 0 56/2600 59/2503 0/ 0
GUAT 74/2474 76/2181 68/2410 54/ 512 62/2147 63/2381 67/2696
HNLC 42/1136 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
HOB2 42/2603 45/2461 37/2274 32/2505 33/2593 35/2467 41/2584
IISC 0/ 0 0/ 0 65/2642 62/2619 62/2770 63/2352 0/ 0
KELY 38/1695 34/1765 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0
KOUR 33/1818 32/2071 30/2387 31/2311 31/1737 32/2260 29/1891
KUNM 0/ 0 0/ 0 0/ 0 0/ 0 78/1896 80/1873 76/1600
MAG0 44/2520 43/2600 44/2583 43/2571 42/2569 43/2689 42/2693
MAS1 25/2341 25/2493 27/2527 27/2514 26/2384 28/2527 26/2537
MATE 58/2460 55/2446 55/2461 57/2440 54/2248 53/2427 57/2412
MAUI 0/ 0 38/2213 37/2236 37/2383 37/2430 36/2670 37/2541
MCM4 48/1770 51/2104 43/2390 45/2391 39/2059 54/1715 39/1987
NRC1 37/2478 38/2564 37/2584 43/2552 37/2420 36/2551 37/2575
NRIL 20/2160 20/2267 21/2640 21/2492 21/2950 21/2581 21/2972
OHI2 42/2552 40/2615 40/2478 43/2568 40/2545 40/2629 42/2637
PERT 40/1859 41/2390 39/2278 41/2364 42/2559 43/2458 44/2550
PIMO 24/2482 24/2176 23/1852 23/2126 25/2592 25/2530 25/2624
POL2 31/2528 31/2266 31/2538 30/2275 30/2534 31/2529 31/2522
RBAY 71/1404 63/1676 60/2019 71/1876 63/2217 70/2009 72/2050
REUN 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 76/1535
STJO 26/2448 27/2617 27/2613 28/2577 27/2490 24/2614 24/2613
THTI 0/ 0 0/ 0 0/ 0 70/2235 0/ 0 0/ 0 0/ 0
TOW2 42/2677 41/2555 43/2431 42/2499 42/2601 41/2534 42/2479
TRAB 44/2016 46/2427 45/2259 46/2466 45/2213 47/2422 45/2222
TROM 33/2015 34/2324 30/2587 30/2753 30/2879 29/2878 28/2953
TSKB 29/2412 29/2556 28/2628 28/2540 30/2544 31/2577 31/2327
ULAB 48/2178 50/2460 51/1826 49/2474 47/2181 49/2478 47/2232
USNO 46/2493 53/2576 57/1282 62/1492 53/ 800 48/2576 51/2574
VILL 26/2348 26/2549 28/2469 27/2539 26/2413 26/2539 27/2547
WSRT 28/2588 28/2585 30/2592 29/2315 0/ 0 0/ 0 0/ 0
YELL 35/2094 35/2444 34/2368 35/2578 38/2684 42/2554 43/2733
PRN01 44/3231 40/3474 40/3628 42/3546 41/3800 42/3777 40/3631
PRN02 44/3348 41/3382 43/3539 44/3614 43/3833 45/3838 42/3606
PRN03 42/3059 39/3135 39/2875 42/3355 41/3671 40/3527 40/3498
PRN04 46/3421 42/3414 43/3545 45/3462 40/3218 44/3475 43/3573
PRN05 49/3058 41/3085 42/3201 47/3088 42/3055 41/2956 41/3081
PRN06 42/3201 41/3338 42/3559 43/3582 41/3310 43/3390 41/3455
PRN07 49/3075 41/3098 43/3272 45/3172 41/3260 45/3140 43/3155
PRN08 E 49/2866 43/2866 44/3098 46/3159 42/3110 42/3187 41/2889
PRN09 E 49/1703 36/2561 40/2436 40/2692 38/2612 40/2816 43/2770
PRN10 43/3524 41/3399 43/3605 44/3463 43/3724 44/3607 44/3762
PRN11 46/2721 45/3016 48/3400 50/3343 48/3364 48/3324 45/3218
PRN13 46/3513 44/3436 45/3668 46/3490 44/3506 43/3701 44/3606
PRN14 42/3032 41/3265 42/3441 42/3448 42/3371 43/3276 42/3225
PRN15 46/3049 40/3300 41/3417 45/3515 39/3599 43/3542 43/3416
PRN16 44/3174 43/3339 44/3529 44/2830 42/3748 44/3798 44/3556
PRN17 E 43/2575 40/3148 41/3462 42/3442 42/3509 41/3530 39/3542
PRN18 42/2899 42/3135 42/3121 43/3304 40/3308 40/3035 43/3297
PRN20 50/3183 43/3266 44/3433 44/3350 40/3377 44/3421 43/3446
PRN21 40/3081 41/3039 41/3390 43/3361 40/3498 39/3339 39/3327
PRN22 46/2604 43/2798 43/2320 42/3094 42/3093 42/2763 43/2923
PRN23 41/2905 38/3245 42/3398 41/3457 39/3439 41/3293 40/3232
PRN24 43/3355 41/3431 43/3650 41/2920 41/2566 41/3566 41/3402
PRN25 E 41/2631 40/3190 42/3362 40/3109 43/3404 41/3123 42/3275
PRN26 39/3022 40/3120 41/3315 44/3353 39/3387 42/3262 42/3359
PRN27 E 40/2643 39/2941 43/2775 42/2566 38/2950 38/2972 39/2957
PRN28 51/2927 45/3043 46/3163 46/3246 43/3225 43/3128 46/3150
PRN29 41/3251 41/3246 42/3469 43/3313 39/3265 41/3427 41/3429
PRN30 49/3061 41/3076 42/3292 43/3307 41/3209 44/3183 41/3187
PRN31 43/2992 42/2182 43/3118 43/3458 43/3680 43/3649 45/3485
Station Clock Offsets Solution for 0h UT
(microsecond / sigma in ns)
04jan25 04jan26 04jan27 04jan28 04jan29 04jan30 04jan31 sig
------------------------------------------------------------------------
ALGO REF --- REF REF REF REF REF --
ALRT --- --- --- --- -1.0774 -1.0994 -1.1280 .2
ARTU -.9825 -.1908 -1.0433 -1.0607 -1.0846 -1.1103 -1.1317 .3
ASC1 --- --- 37.5184* 23.8368* --- --- --- .3
AUCK -1.0154* -.2187* -1.0774* -1.0921* -1.1102* -1.1389* -1.1543* .4
BAHR 773.8420 774.6443 773.7816 773.7543 773.7216 773.6891 773.6588 .2
CAS1 -.9359 -.1238 -.9952 -1.0088 -1.0346 -1.0628 -1.0929 .3
CEDU -.9278 -.1564 -1.0111 -.9953 -1.0155 -1.0544* -1.1081 .2
COCO -.9614 -.1697 -.9935 -1.0085 -1.0392 -1.0688 -1.0892 .2
CORD -.9191 -.1247 -.9685 -.9963 -1.0245 -1.0694 -1.0557 .3
CRO1 -1.0016 -.1881 -1.0342 --- --- --- --- .2
DAV1 -.9400 -.1087 -.9972 -.9992 -1.0260 --- -1.0987 .3
DRAO -4.2782 -3.4942 -4.3740 -4.4210 -4.4698 -4.5188 -4.5668 .2
FAIR 940.4144 941.2302 940.3801 940.3647 940.3485 940.3289 940.3150 .3
GOL2 -.9225 -.1322 -1.0067 -1.0473 -1.0408 -1.0842* -1.9072 .3
GUAM --- --- --- --- -1.1157 -1.1361 --- .2
GUAT 275.0982 698.5180 234.0426 121.7110 899.1904 834.9797 11.2836 .3
HNLC --- --- --- --- --- --- --- --
HOB2 -.9624 -.1417 -.9870 -.9968 -1.0077 -1.0198 -1.0301 .2
IISC --- --- -1.0283 -1.0425 -1.0752 -1.1009 --- .2
KELY -.9794 -.1821 --- --- --- --- --- .8
KOUR 564.8908* 565.5890* 564.6147 564.4777 564.3365* 564.2098 564.0509 .8
KUNM --- --- --- --- -.8927 -.9645 -1.0550 .2
MAG0 -.9987* -.1986* -1.0484* -1.0718* -1.0968* -1.1218* -1.1401* .2
MAS1 153.1505 153.8825 152.9385 152.8313 152.7203 152.5880 152.4884 .3
MATE 140.1707 140.9308 140.0248 139.9532 139.8806 139.8064 139.7329 .2
MAUI --- -.2449* -1.0969* -1.1196* -1.1351* -1.1593* -1.1565* .2
MCM4 120.5554* 180.1503 239.8497 8.7373 11.2363 16.1920 75.2374 .3
NRC1 -.8094 REF -.8556 -.8764 -.9000 -.9248 -.9470 .2
NRIL -1.0063 -.2007 -1.0429 -1.0668 -1.0875 -1.1207 -1.1357 .4
OHI2 -.9368 -.1404 -.9879 -1.0057 -1.0251 -1.0603 -1.0843 .2
PERT 998.4326 998.9811 997.8668 997.5819 997.2993 997.0261 996.7729 .3
PIMO -1.0088 -.2062 -1.0581 -1.0855 -1.0910 -1.1020 -1.1446 .4
POL2 -.9751 -.1616 -1.0212 -1.0408 -1.0699 -1.0875 -1.1111 .2
RBAY -.9767 12.8649* -.9876 -.9749 -.9867 -1.1073* -1.0711 .5
REUN --- --- --- --- --- --- -1.1286 .3
STJO -25.1357 -24.3052 -25.1389 -25.1388 -25.1174 -25.1212 -25.1233 .2
THTI --- --- --- 309.7620 --- --- --- .3
TOW2 -1.0026 -.2125 -1.0536 -1.0690 -1.0974 -1.1219 -1.1460 .2
TRAB -.8861* -.0798 -.9336 -.9549 -.9849 -1.0095 -1.0358 .2
TROM -.9123 -.1144* -.9730 -1.0091 -1.0449 -1.0521 -1.0888 .3
TSKB -1.5323 -.7314 -1.5908 -1.6233 -1.6507 -1.6896 -1.7203 .2
ULAB -.9311 -.1292 -.9873 -1.0357 -1.0572 -1.0402 -1.0984 .3
USNO -.2883 .5215 -.3341 -.3556 --- -.4052 -.4284 .2
VILL 857.0677 857.3812 856.0776 855.5882 855.0699 854.5986 854.0970 .2
WSRT .0143 .8362 -.0069 -.0158 --- --- --- .2
YELL .7115 1.5946 .8127 .8655 .9159 .9660 1.0151 .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 ALRT ARTU ASC1 AUCK BAHR CAS1 CEDU COCO CORD CRO1 DAV1 DRAO FAIR
global: GOL2 GUAM GUAT HNLC HOB2 IISC KELY KOUR KUNM MAG0 MAS1 MATE MAUI MCM4
global: NRC1 NRIL OHI2 PERT PIMO POL2 RBAY REUN STJO THTI TOW2 TRAB TROM TSKB
global: ULAB USNO VILL WSRT YELL
--
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: pierre at geod.nrcan.gc.ca
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