[IGSREPORT-12941] Wk 1338 EMR Analysis Report
Brian Donahue
bdonahue at geod.nrcan.gc.ca
Fri Sep 9 12:19:05 PDT 2005
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IGS Electronic Report 09 Sep 12:19:09 PDT 2005 Message Number 12941
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Author: NRCan/GSDivision
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EMR ANALYSIS REPORT GPS-WEEK 1338 Dates: 05aug28 to 05sep03
********************************************************************************
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
EMR13380-6.SP3 GPS ephem. files for days 0-6, week #1338 in sp3 format
EMR13387.ERP pole x,y and DUT1 solutions for week #1338
EMR13387.SNX station and EOP weekly combined solution in SINEX format
EMR13387.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).
NRC1 clock error & drift were about 115.5 ns (53610) & -2.3 ns/day w.r.t.
GPS time
ALGO clock error & drift were about 1099.0 ns (53611) & 10.6 ns/day w.r.t.
GPS time
SOLUTION CHARACTERISTICS
1. Solution identifier: Submission 050909
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
05aug28 05aug29 05aug30 05aug31 05sep01 05sep02 05sep03
---------------------------------------------------------------------
ALGO .70/2456 .66/2531 .69/2518 .56/2492 .48/2514 .57/2530 .56/2532
AREQ .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .47/2311 .45/2313
ARTU .55/2510 .54/2540 .53/2584 .53/2546 .52/2493 .52/2377 .55/2505
ASPA .00/ 0 .67/1904 .71/1891 .65/2292 .00/ 0 .00/ 0 .00/ 0
AUCK .45/2251 .47/2189 .46/2255 .44/2260 .45/2208 .45/2270 .45/2044
CAS1 .43/2828 .46/2686 .45/2803 .43/2273 .43/2633 .42/2640 .43/2792
CHPI .55/2452 .55/2540 .62/2627 .60/2272 .57/2544 .64/2348 .51/2624
COCO .70/2728 .70/2735 .72/2671 .67/2275 .00/ 0 .00/ 0 .00/ 0
DARW .00/ 0 .00/ 0 .00/ 0 .00/ 0 .64/2312 .63/2500 .63/2565
DGAR .63/2800 .72/2576 .78/2688 .71/2534 .00/ 0 .00/ 0 .00/ 0
DRAO .56/2651 .62/2476 .52/2535 .54/2645 .56/2649 .54/2649 .56/2644
FAIR .57/2763 .56/2619 .56/2755 .57/2254 .55/2581 .57/2353 .54/2462
GLPS .48/2362 .50/2851 .52/2877 .50/2754 .50/2470 .00/ 0 .00/ 0
GOUG .00/ 0 .00/ 0 .72/1617 .65/1500 .64/1492 .00/ 0 .00/ 0
GUAM .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .82/2437 .75/2566
HOFN .64/2670 .64/2652 .70/2576 .82/2291 .73/2552 .71/2425 .70/2415
IISC .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .78/2264
ISPA .60/2232 .59/2196 .64/2186 .59/2576 .56/2317 .53/2518 .53/2585
JAB1 .63/2203 .58/2317 .59/2231 .61/2134 .00/ 0 .00/ 0 .00/ 0
KERG .65/2424 .57/2387 .63/2441 .65/2376 .57/2476 .59/2277 .57/2396
KIT3 .77/2265 .77/2008 .77/2300 .76/2235 .78/2353 .79/2281 .77/2271
KOKB .70/2499 .75/2249 .88/2491 .67/2376 .69/2433 .69/2499 .74/2364
KOUR .00/ 0 .00/ 0 .75/2327 .85/1755 .58/2373 .65/2266 .57/1934
KUNM .68/2105 .73/2139 .75/2004 .70/2112 .70/2077 .68/2118 .69/2295
MAS1 .36/ 358 .00/ 0 .00/ 0 .00/ 0 .45/2369 .44/2334 .45/2326
MATE .53/2446 .68/1752 .60/1356 .58/2447 .60/2311 .55/2299 .69/2449
MBAR .72/2784 .61/2629 .58/2753 .62/2351 .67/2702 .64/2602 .71/2516
MDO1 .77/2022 .75/2168 .53/2213 .50/2261 .67/2237 .63/2297 .56/2228
MOBS .61/2570 .67/2568 .77/2463 .64/2336 .00/ 0 .00/ 0 .00/ 0
NKLG .72/2261 .71/2332 .79/2522 .73/2498 .73/2508 .72/2287 .00/ 0
NRC1 .84/2529 .56/2522 .57/2523 .57/2513 .50/2534 .65/2536 .59/2534
NYAL .58/3087 .45/2916 .44/3132 .41/2928 .44/3074 .43/2664 .00/ 0
ONSA .62/2279 .63/2421 .55/2070 .51/2242 .54/2533 .61/2534 .52/2537
PERT .00/ 0 .00/ 0 .00/ 0 .00/ 0 .53/2276 .51/2420 .58/2398
PETP .87/2235 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .00/ 0 .65/2173
REUN .00/ 0 .00/ 0 .00/ 0 .00/ 0 .64/1846 .65/1766 .70/1815
RIOG .43/2549 .46/2544 .47/2548 .44/2546 .45/2548 .45/2542 .43/2539
STJO .52/2435 .56/2566 .59/2565 .61/2519 .54/2562 .81/2409 .76/2547
SUTM .45/2291 .46/2261 .53/2472 .52/2325 .49/2383 .49/2464 .49/2463
SVTL .72/2627 .65/2275 .00/ 0 .00/ 0 .57/2563 .58/2357 .59/2626
SYOG .58/2530 .58/2358 .56/2583 .63/1864 .57/2009 .64/2203 .62/2214
THTI .54/2663 .54/2589 .61/2578 .81/2250 .83/2445 .67/2627 .56/2664
THU3 .45/3064 .46/1714 .44/2779 .43/2915 .43/3090 .45/3038 .45/3048
TIXI .47/2917 .47/2918 .48/2913 .49/2451 .49/2796 .51/2588 .51/2693
TSKB .60/2620 .57/2623 .67/2529 .52/2619 .56/2481 .55/2612 .56/2525
ULAB .58/2363 .57/2375 .59/2283 .53/2259 .52/2384 .56/2365 .55/2368
USNO .70/2219 .71/2316 .69/2408 .76/2404 .69/2405 .63/2405 .63/2408
WTZR .60/2504 .58/2354 .62/2450 .63/2491 .61/2525 .66/2507 .68/2426
YELL .46/2681 .47/2524 .46/2763 .43/2441 .43/2498 .43/2437 .50/2505
PRN01 .57/3562 .57/3480 .61/3616 .59/3408 .54/3467 .59/3221 .56/3341
PRN02 .68/3336 .65/3454 .68/3534 .64/3433 .65/3284 .62/3324 .63/3061
PRN03 .60/3644 .58/3462 .61/3506 .59/3351 .58/3641 .59/3546 .58/3536
PRN04 .61/3348 .62/3183 .65/3247 .61/3429 .57/3476 .60/3446 .56/3341
PRN05 E .71/3222 .66/3260 .75/3167 .65/3229 .64/2685 .64/3102 .61/3100
PRN06 .59/3524 .59/3438 .62/3498 .59/3311 .56/3400 .60/3378 .61/3423
PRN07 .60/3531 .59/3593 .60/3636 .57/3463 .57/3471 .58/3341 .58/3262
PRN08 .65/3597 .59/3490 .62/3571 .58/3493 .55/3640 .61/3667 .60/3500
PRN09 .65/3329 .60/3207 .61/3410 .61/3240 .57/3316 .55/3256 .59/3353
PRN10 E .63/3245 .59/3358 .62/3367 .59/3134 .56/3325 .59/3347 .58/3286
PRN11 .57/3506 .53/3288 .59/3535 .60/3435 .56/3489 .55/3315 .60/3545
PRN13 .61/3390 .61/3278 .61/3286 .58/3144 .59/3347 .60/3448 .59/3372
PRN14 .62/3556 .55/1845 .62/3756 .64/3605 .57/3559 .62/3446 .58/3465
PRN15 .57/3526 .58/3329 .60/3380 .59/3392 .57/3704 .59/3444 .59/3534
PRN16 E .61/3584 .60/3194 .61/3090 .61/3106 .56/3362 .61/3574 .59/3534
PRN18 E .61/3870 .62/3746 .59/3748 .61/3450 .56/3731 .57/3605 .57/3687
PRN19 .63/3266 .64/3435 .66/3481 .64/3516 .63/3727 .68/3646 .67/3625
PRN20 E .60/3416 .59/3390 .62/3498 .60/3219 .58/3490 .61/3284 .58/3412
PRN21 .57/3613 .54/3487 .57/3513 .58/3319 .54/3468 .57/3509 .56/3534
PRN22 E .67/3674 .66/3481 .68/3402 .69/3398 .60/3534 .65/3515 .65/3649
PRN23 .67/2943 .64/3161 .68/3360 .67/2944 .67/3348 .68/3158 .70/3422
PRN24 .55/3269 .56/3334 .57/3404 .57/3386 .56/3461 .57/3462 .59/3313
PRN25 .57/3503 .60/3303 .61/3562 .61/3365 .57/3514 .61/3387 .59/3514
PRN26 .57/3463 .56/3401 .54/3334 .55/3300 .55/3348 .54/3427 .60/3473
PRN27 .59/3338 .59/3443 .58/3501 .57/3428 .55/3502 .56/3514 .57/3528
PRN28 E .63/3652 .62/3559 .56/3463 .57/3366 .59/3541 .58/3425 .60/3616
PRN29 .55/3471 .56/3169 .57/3369 .57/3316 .58/2850 .55/3407 .60/3349
PRN30 E .66/3011 .67/2755 .70/3252 .61/2553 .60/2992 .59/3056 .56/3023
PRN31 .53/1844 .51/1797 .55/1794 .49/1879 .45/1884 .48/1842 .48/1775
Pseudo Range Statistics
rms (cm) / # obs
05aug28 05aug29 05aug30 05aug31 05sep01 05sep02 05sep03
---------------------------------------------------------------------
ALGO 37/2456 41/2536 46/2518 41/2492 40/2514 39/2530 34/2532
AREQ 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 25/2311 21/2313
ARTU 23/2510 24/2540 24/2584 24/2546 23/2493 24/2377 25/2505
ASPA 0/ 0 42/1909 39/1891 37/2292 0/ 0 0/ 0 0/ 0
AUCK 49/2251 51/2190 50/2255 49/2260 49/2208 49/2270 48/2044
CAS1 48/2828 48/2686 47/2806 43/2273 29/2633 27/2642 29/2792
CHPI 51/2452 50/2546 51/2627 49/2272 49/2544 50/2348 50/2624
COCO 44/2732 47/2736 45/2675 47/2276 0/ 0 0/ 0 0/ 0
DARW 0/ 0 0/ 0 0/ 0 0/ 0 32/2313 33/2500 32/2565
DGAR 30/2804 30/2578 30/2689 30/2535 0/ 0 0/ 0 0/ 0
DRAO 33/2651 36/2476 33/2539 36/2645 34/2649 35/2649 34/2644
FAIR 26/2763 26/2619 25/2755 25/2254 25/2581 25/2353 24/2462
GLPS 38/2362 39/2851 39/2877 37/2754 37/2470 0/ 0 0/ 0
GOUG 0/ 0 0/ 0 0/ 0 0/ 0 69/1492 0/ 0 0/ 0
GUAM 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 43/2438 53/2567
HOFN 50/2670 52/2652 50/2576 52/2291 54/2552 54/2427 52/2415
IISC 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 61/2268
ISPA 27/2232 26/2196 26/2186 27/2576 29/2317 28/2518 27/2585
JAB1 46/2203 45/2317 43/2231 45/2134 0/ 0 0/ 0 0/ 0
KERG 59/2426 57/2387 57/2441 56/2377 54/2476 61/2277 56/2396
KIT3 54/2265 52/2009 53/2301 55/2235 53/2353 51/2283 50/2272
KOKB 35/2499 35/2253 34/2495 33/2376 34/2433 33/2499 33/2364
KOUR 0/ 0 0/ 0 63/2331 0/ 0 0/ 0 70/2268 65/1934
MAS1 28/ 358 0/ 0 0/ 0 0/ 0 50/2369 35/2334 33/2326
MATE 37/2446 37/1753 38/1356 43/2447 40/2311 38/2299 38/2450
MBAR 34/2785 32/2629 37/2753 37/2351 32/2702 33/2602 34/2518
MDO1 52/2023 53/2169 52/2214 52/2262 53/2238 53/2297 53/2228
MOBS 56/2570 57/2568 57/2463 57/2336 0/ 0 0/ 0 0/ 0
NKLG 70/2261 66/2334 65/2522 66/2498 65/2508 68/2287 0/ 0
NRC1 37/2529 36/2524 41/2524 37/2513 39/2534 40/2536 39/2538
NYAL 41/3087 38/2916 40/3132 39/2928 37/3074 36/2664 0/ 0
ONSA 44/2280 44/2421 45/2070 45/2242 45/2532 44/2533 46/2537
PERT 0/ 0 0/ 0 0/ 0 0/ 0 70/2276 66/2422 67/2398
PETP 48/2243 0/ 0 0/ 0 0/ 0 0/ 0 0/ 0 63/2177
RIOG 37/2549 34/2544 35/2548 34/2547 35/2548 36/2542 36/2539
STJO 34/2435 44/2566 34/2565 34/2519 35/2562 34/2414 35/2558
SUTM 53/2291 54/2261 54/2472 54/2325 56/2383 56/2464 54/2463
SVTL 50/2630 49/2276 0/ 0 0/ 0 50/2563 49/2357 49/2626
SYOG 52/2530 53/2358 51/2583 50/1864 47/2009 52/2204 51/2214
THTI 63/2663 64/2589 64/2578 60/2260 65/2446 64/2627 65/2664
THU3 46/3064 45/1714 48/2779 47/2915 46/3090 48/3038 48/3048
TIXI 44/2917 41/2918 42/2913 43/2452 44/2796 43/2588 43/2693
TSKB 25/2620 25/2623 24/2529 24/2619 25/2481 25/2612 25/2525
ULAB 64/2363 61/2374 64/2283 59/2258 68/2384 65/2365 65/2368
USNO 49/2220 50/2316 52/2409 49/2404 51/2405 51/2405 52/2408
WTZR 58/2504 56/2354 58/2450 58/2491 60/2525 56/2507 57/2426
YELL 40/2681 42/2524 43/2763 42/2441 41/2498 42/2437 43/2505
PRN01 43/3485 42/3392 42/3424 43/3151 44/3311 43/3130 45/3248
PRN02 46/3234 47/3352 46/3369 47/3218 47/3120 47/3227 48/2969
PRN03 42/3584 42/3402 42/3411 40/3241 41/3408 41/3404 44/3396
PRN04 46/3268 46/3106 46/3128 45/3197 44/3228 45/3305 47/3196
PRN05 E 49/3140 45/3198 47/3129 48/3090 49/2543 45/3010 45/3034
PRN06 45/3428 46/3344 46/3360 46/3135 45/3196 46/3211 45/3279
PRN07 46/3451 44/3510 46/3491 47/3347 49/3362 46/3210 48/3133
PRN08 44/3544 44/3438 44/3487 41/3386 43/3396 45/3551 44/3388
PRN09 42/3331 43/3177 44/3328 42/3134 45/3154 43/3173 45/3215
PRN10 E 46/3163 46/3277 46/3239 45/3014 47/3094 49/3191 48/3132
PRN11 44/3500 45/3289 46/3416 42/3240 45/3301 45/3240 45/3472
PRN13 49/3364 49/3249 52/3214 46/2961 49/3151 52/3369 51/3293
PRN14 47/3440 44/1728 49/3555 48/3357 47/3292 50/3233 47/3252
PRN15 43/3498 42/3274 43/3237 44/3237 46/3445 44/3291 44/3350
PRN16 E 46/3521 45/3128 45/3023 44/2917 46/3094 47/3426 48/3389
PRN18 E 48/3720 49/3598 48/3537 47/3199 50/3452 48/3375 45/3457
PRN19 48/3266 48/3370 48/3425 47/3344 49/3473 49/3503 47/3478
PRN20 E 48/3368 48/3329 48/3381 48/3084 49/3284 48/3167 46/3292
PRN21 46/3488 46/3364 46/3333 45/3101 47/3223 48/3315 49/3360
PRN22 E 44/3570 44/3380 46/3317 44/3165 47/3274 45/3309 44/3440
PRN23 48/2884 50/3101 52/3234 46/2713 50/3076 49/3102 52/3297
PRN24 45/3204 45/3268 45/3292 45/3149 45/3186 46/3308 44/3162
PRN25 45/3404 46/3201 48/3370 46/3084 48/3259 44/3210 44/3315
PRN26 43/3363 43/3307 43/3208 44/3112 42/3133 42/3266 44/3302
PRN27 44/3277 44/3384 41/3381 40/3200 43/3271 44/3400 43/3415
PRN28 E 47/3584 46/3490 47/3331 45/3177 45/3338 45/3300 46/3495
PRN29 43/3377 42/3076 42/3241 42/3124 43/2680 44/3275 45/3179
PRN30 E 46/2940 45/2767 45/3114 45/2429 48/2756 43/2967 44/2864
PRN31 45/1757 44/1713 44/1708 46/1754 44/1762 43/1756 47/1689
Station Clock Offsets Solution for 0h UT
(microsecond / sigma in ns)
05aug28 05aug29 05aug30 05aug31 05sep01 05sep02 05sep03 sig
------------------------------------------------------------------------
ALGO .9747 REF REF REF REF REF REF .2
AREQ --- --- --- --- --- -1.2060 -1.2109 .2
ARTU -.1582 -1.1541 -1.1696 -1.1749 -1.1906 -1.1910* -1.2012 .4
ASPA --- 275.0691 348.7289 288.5136 --- --- --- .2
AUCK -.1878* -1.1755* -1.1844* -1.1947* -1.2072* -1.2128* -1.2445* .3
CAS1 -.1592 -1.1511 -1.1441 -1.1739 -1.1839 -1.1989 -1.2147 .2
CHPI -.1750 -1.1517 -1.1716 -1.1732 -1.1888 -1.1968 -1.2071 .2
COCO 840.2739 839.2873 839.2767 839.2631 --- --- --- .2
DARW --- --- --- --- 931.2605 931.2500 931.2382 .2
DGAR -.1725 -1.1521 -1.1717 -1.1751 --- --- --- .2
DRAO -.0069 -.9732 1.7949* 1.8020 1.8075 1.8138 -2.1896 .2
FAIR 551.0416 550.0506 550.0351 550.0208 550.0056 549.9899 549.9729 .3
GLPS -.2273 -1.2135 -1.2078 -1.2203 -1.2323 --- --- .2
GOUG --- --- --- --- 581.8354 --- --- .3
GUAM --- --- --- --- --- -1.2184 -1.2305 .2
HOFN 367.2350* 128.0270* 21.8727* 53.1447* 197.1516* 350.4680* 482.9099* .4
IISC --- --- --- --- --- --- -1.2016 .2
ISPA -.2183 -1.1842 -1.1788* -1.1936 -1.2267 -1.2103 -1.2299 .2
JAB1 -.1798* -1.1761* -1.1765* -1.1960* --- --- --- .3
KERG 524.3440 523.2754 523.1884 523.0956 523.0010 522.9011 522.8075 .2
KIT3 -.1009 -1.0902 -1.1223 -1.1142 -1.1502 -1.1041 -1.1885 .2
KOKB 663.8575 662.8679 662.8536 662.8403 662.8265 662.8121 662.7974 .2
KOUR --- --- 952.8923 --- --- -1.2014 -1.2148 .2
MAS1 -.1635 --- --- --- -1.1792 -1.1754 -1.2050 .3
MATE 868.4885 867.1766 866.8392 866.5042 866.1659 865.8264 865.4863 .7
MBAR -.1760 -1.1523 -1.1723 -1.1727 -1.1845 -1.1968 -1.2103 .3
MDO1 .2808 -.1613 .2975 1.1142 2.3117 3.6870 4.1026 .2
MOBS -.1566 -1.1775 -1.1859 -1.1919 --- --- --- .2
NKLG 376.7860* 940.2388* 502.1401* 66.8811* 636.6690* 206.7841* --- .2
NRC1 REF -.9881 -1.0011 -1.0134 -1.0256 -1.0388 -1.0518 .2
NYAL .2194 -.7436 -.7324 -.7198 -.7074 -.6967 --- .2
ONSA 40.9592 40.0635 40.1429 40.2237 40.3040 40.3830 40.4615 .2
PERT --- --- --- --- 763.2956 763.0948 762.8729 .2
PETP -.1768* --- --- --- --- --- -1.2244* .4
RIOG -.1892 -1.1688 -1.1904 -1.1985 -1.2076 -1.2142 -1.2326 .2
STJO -.4687 -1.4702 -1.4964 -1.5202 -1.5450 -1.5707 -1.6043 .2
SUTM -.1060 -1.0872 -1.1123 -1.1314 -1.1520 -1.1426 -1.1668 .2
SVTL -.0381 -1.1218 --- --- -1.0229 -1.1347 -1.0994 .2
SYOG 163.3721* 162.3919 162.3855 162.3765 162.3721* 162.3655 162.3549 .5
THTI 74.9130 145.6397 217.2927 289.0574 360.8869 432.7253 504.4905 .2
THU3 -.1828 -1.1605 -1.1768 -1.1877 -1.1908 -1.2031 -1.2127 .2
TIXI -.1842* -1.1685* -1.1898* -1.1944* -1.2135* -1.2121* -1.2279* .2
TSKB -2.1886 -3.1874 -3.2054 -3.2217 -3.2343 -3.2570 -3.2762 .2
ULAB -.1333 -1.1047 -1.1358 -1.1311 -1.1402 -1.1537 -1.1727 .3
USNO .5437 -.4442 -.4566 -.4678 -.4798 -.4924 -.5051 .2
WTZR 74.9768 73.9854 73.9694 73.9547 73.9389 73.9224* 73.9057 .3
YELL -.1481 -1.1399 -1.1561 -1.1713 -1.1872 -1.2040 -1.2199 .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 ARTU ASPA AUCK CAS1 CHPI COCO DARW DGAR DRAO FAIR GLPS GOUG
global: GUAM HOFN IISC ISPA JAB1 KERG KIT3 KOKB KOUR KUNM MAS1 MATE MBAR MDO1
global: MOBS NKLG NRC1 NYAL ONSA PERT PETP REUN RIOG STJO SUTM SVTL SYOG THTI
global: THU3 TIXI TSKB ULAB USNO WTZR YELL
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