IVS Analysis Report for W20048 ($20FEB17XW) This report is the official IVS analysis report that corresponds to the database maintained by the IVS Data Centers for this session. (Analyzed by Karen Baver, Goddard Space Flight Center VLBI Analysis Center. Spoolfile source: interactive solve/nuSolve analysis.) Problems: An apparent sub-ambiguity occurred in the PIETOWN:WETTZ13N data. This baseline also had a lot of unusable observations with quality codes of 0. Number of observations rejected during correlation: 0 Number of observations not usable by the software: 58 observation 6, PIETOWN :WETTZ13N, 1324+224, 08:32:16, quality code X-band: 9 S-band: 0 observation 9, PIETOWN :WETTZ13N, 0529+483, 08:34:52, quality code X-band: 7 S-band: 0 observation 15, PIETOWN :WETTZ13N, 0738+491, 08:38:54, quality code X-band: 0 S-band: 0 observation 17, MK-VLBA :WETTZ13N, 1418+546, 08:41:24, quality code X-band: 0 S-band: 9 observation 18, PIETOWN :WETTZ13N, 1418+546, 08:41:24, quality code X-band: 0 S-band: 0 observation 20, MK-VLBA :WETTZ13N, 1156+295, 08:43:14, quality code X-band: 0 S-band: 9 observation 21, PIETOWN :WETTZ13N, 1156+295, 08:43:14, quality code X-band: 0 S-band: 0 observation 23, MK-VLBA :WETTZ13N, 0415+398, 08:47:15, quality code X-band: 0 S-band: 9 observation 24, PIETOWN :WETTZ13N, 0415+398, 08:47:15, quality code X-band: 0 S-band: 0 observation 30, PIETOWN :WETTZ13N, 1101+384, 08:53:51, quality code X-band: 9 S-band: 0 observation 32, MK-VLBA :WETTZ13N, 1300+580, 08:57:07, quality code X-band: 0 S-band: 9 observation 33, PIETOWN :WETTZ13N, 1300+580, 08:57:07, quality code X-band: 0 S-band: 0 observation 39, PIETOWN :WETTZ13N, 0718+793, 09:02:06, quality code X-band: 0 S-band: 0 observation 42, PIETOWN :WETTZ13N, 0613+570, 09:03:39, quality code X-band: 8 S-band: 0 observation 45, PIETOWN :WETTZ13N, 1053+815, 09:05:15, quality code X-band: 0 S-band: 0 observation 47, MK-VLBA :WETTZ13N, 1156+295, 09:07:57, quality code X-band: 0 S-band: 9 observation 48, PIETOWN :WETTZ13N, 1156+295, 09:07:57, quality code X-band: 0 S-band: 0 observation 50, MK-VLBA :WETTZ13N, 1418+546, 09:10:01, quality code X-band: 0 S-band: 9 observation 51, PIETOWN :WETTZ13N, 1418+546, 09:10:01, quality code X-band: 0 S-band: 0 observation 58, MK-VLBA :PIETOWN , 0714+457, 09:16:24, quality code X-band: 9 S-band: 0 observation 59, MK-VLBA :WETTZ13N, 0714+457, 09:16:24, quality code X-band: 9 S-band: 0 observation 60, PIETOWN :WETTZ13N, 0714+457, 09:16:24, quality code X-band: 9 S-band: 0 observation 63, PIETOWN :WETTZ13N, 1324+224, 09:20:16, quality code X-band: 9 S-band: 0 observation 65, MK-VLBA :WETTZ13N, 1300+580, 09:22:39, quality code X-band: 0 S-band: 9 observation 66, PIETOWN :WETTZ13N, 1300+580, 09:22:39, quality code X-band: 0 S-band: 0 observation 69, PIETOWN :WETTZ13N, 0529+483, 09:25:41, quality code X-band: 8 S-band: 0 observation 70, MK-VLBA :PIETOWN , 0749+540, 09:27:22, quality code X-band: 9 S-band: 0 observation 71, MK-VLBA :WETTZ13N, 0749+540, 09:27:22, quality code X-band: 0 S-band: 0 observation 72, PIETOWN :WETTZ13N, 0749+540, 09:27:22, quality code X-band: 0 S-band: 0 observation 78, PIETOWN :WETTZ13N, 0738+491, 09:31:18, quality code X-band: 9 S-band: 0 observation 80, MK-VLBA :WETTZ13N, 1418+546, 09:33:26, quality code X-band: 0 S-band: 9 observation 81, PIETOWN :WETTZ13N, 1418+546, 09:33:26, quality code X-band: 0 S-band: 0 observation 90, PIETOWN :WETTZ13N, 0613+570, 09:39:07, quality code X-band: 7 S-band: 0 observation 93, PIETOWN :WETTZ13N, 0804+499, 09:41:06, quality code X-band: 9 S-band: 0 observation 96, PIETOWN :WETTZ13N, 1324+224, 09:44:29, quality code X-band: 9 S-band: 0 observation 98, MK-VLBA :WETTZ13N, 1300+580, 09:47:04, quality code X-band: 0 S-band: 8 observation 99, PIETOWN :WETTZ13N, 1300+580, 09:47:04, quality code X-band: 0 S-band: 0 observation 102, PIETOWN :WETTZ13N, 0529+483, 09:50:19, quality code X-band: 7 S-band: 0 observation 103, MK-VLBA :PIETOWN , 3C371 , 09:52:19, quality code X-band: 0 S-band: 0 observation 104, MK-VLBA :WETTZ13N, 3C371 , 09:52:19, quality code X-band: 0 S-band: 0 observation 105, PIETOWN :WETTZ13N, 3C371 , 09:52:19, quality code X-band: 9 S-band: 0 observation 109, MK-VLBA :PIETOWN , 0749+540, 09:56:12, quality code X-band: 9 S-band: 0 observation 110, MK-VLBA :WETTZ13N, 0749+540, 09:56:12, quality code X-band: 0 S-band: 0 observation 111, PIETOWN :WETTZ13N, 0749+540, 09:56:12, quality code X-band: 0 S-band: 0 observation 120, PIETOWN :WETTZ13N, 0613+570, 10:02:00, quality code X-band: 9 S-band: 0 observation 126, PIETOWN :WETTZ13N, 0716+714, 10:07:03, quality code X-band: 5 S-band: 0 observation 128, MK-VLBA :WETTZ13N, NGC6251 , 10:08:59, quality code X-band: 0 S-band: 0 observation 129, PIETOWN :WETTZ13N, NGC6251 , 10:08:59, quality code X-band: 0 S-band: 0 observation 131, MK-VLBA :WETTZ13N, 1300+580, 10:11:42, quality code X-band: 0 S-band: 9 observation 132, PIETOWN :WETTZ13N, 1300+580, 10:11:42, quality code X-band: 0 S-band: 0 observation 135, PIETOWN :WETTZ13N, 0529+483, 10:15:11, quality code X-band: 7 S-band: 0 observation 136, MK-VLBA :PIETOWN , 3C371 , 10:17:00, quality code X-band: 0 S-band: 0 observation 137, MK-VLBA :WETTZ13N, 3C371 , 10:17:00, quality code X-band: 0 S-band: 0 observation 138, PIETOWN :WETTZ13N, 3C371 , 10:17:00, quality code X-band: 7 S-band: 0 observation 139, MK-VLBA :PIETOWN , 1636+473, 10:18:32, quality code X-band: 0 S-band: 0 observation 140, MK-VLBA :WETTZ13N, 1636+473, 10:18:32, quality code X-band: 0 S-band: 0 observation 150, PIETOWN :WETTZ13N, 0613+570, 10:25:05, quality code X-band: 7 S-band: 0 observation 156, PIETOWN :WETTZ13N, 0716+714, 10:30:01, quality code X-band: 5 S-band: 0 Number of observations rejected during analysis: 8 An apparent sub-ambiguity separated the PIETOWN:WETTZ13N data into two groups. The smaller group, consisting of the following six observations, was deselected: observation 12, PIETOWN :WETTZ13N, 0955+476, 08:37:14, which fits at -14186.0 +/- 651.6 ps observation 57, PIETOWN :WETTZ13N, 0955+476, 09:13:32, which fits at -14362.5 +/- 652.0 ps observation 75, PIETOWN :WETTZ13N, 0716+714, 09:29:40, which fits at -13660.9 +/- 651.1 ps observation 87, PIETOWN :WETTZ13N, 0955+476, 09:37:04, which fits at -13826.6 +/- 651.9 ps observation 117, PIETOWN :WETTZ13N, 0955+476, 09:59:59, which fits at -13093.6 +/- 652.2 ps observation 153, PIETOWN :WETTZ13N, 1144+402, 10:27:44, which fits at -9028.5 +/- 651.1 ps In addition, two other PIETOWN :WETTZ13N observations with large residuals were deselected: observation 114, PIETOWN :WETTZ13N, 1128+385, 09:58:25, which fits at 5539.0 +/- 652.0 ps observation 147, PIETOWN :WETTZ13N, 0955+476, 10:23:06, which fits at 4018.7 +/- 651.9 ps Other comments: The correlator report noted the following: MK-VLBA (Mk/m): Removed channel(s) from fringe fitting: XR3U, XR4U Parameterization: 10 parameters: UT1 offset atmosphere offset for: MK-VLBA PIETOWN WETTZ13N clock offset, first order term, and second order term for: PIETOWN WETTZ13N Clock breaks: None Session Statistics Observations: 156 scheduled 156 correlated (included in the database) 98 recoverable (usable in Solve/nuSolve) 90 used Session fit: 89.866 ps UT1 formal error: 36.96 microsec Source Performance Number of Observations Scheduled Correlated* Used 0415+398 3 3 1 0529+483 12 12 8 0552+398 3 3 3 0613+570 12 12 8 0714+457 3 3 0 0716+714 12 12 9 0718+793 3 3 2 0738+491 6 6 4 0749+540 6 6 0 0804+499 3 3 2 0955+476 15 15 10 1053+815 3 3 2 1101+384 3 3 2 1128+385 9 9 8 1144+402 9 9 8 1156+295 6 6 2 1300+580 12 12 4 1324+224 9 9 6 1418+546 12 12 6 NGC6251 3 3 1 1636+473 3 3 1 1803+784 3 3 3 3C371 6 6 0 ------------ --------- ---------- ------ Source Total 156 156 90 * Correlated means included in the database. Please note that the number of recoverable (usable) observations cannot be broken down by source for Intensive solutions.