IVS Analysis Report for I18081 ($18MAR22XU) 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: The SVETLOE-WETTZELL baseline had too little data to be usable, and nuSolve deselected it. The KOKEE-SVETLOE and NYALES20-SVETLOE baselines had little data and were very noisy, so they were deselected manually. So no SVETLOE data was used from this session. KOKEE-WETTZELL was included in solution but had only five observations. The best baselines were NYALES20-WETTZELL with eight observations and KOKEE-NYALES20 with 11 observations. These baselines were included in the solution. Many observations had quality codes of zero. Number of observations rejected during correlation: 20 This includes the following observations, which were not correlated in X-band: 18:30:20 NYALES20-WETTZELL 0133+476 18:30:20 SVETLOE-WETTZELL 0133+476 18:38:03 KOKEE-WETTZELL 1803+784 18:38:03 SVETLOE-WETTZELL 1803+784 19:04:30 NYALES20-WETTZELL NRAO512 19:08:45 KOKEE-WETTZELL 0059+581 19:08:45 SVETLOE-WETTZELL 0059+581 Number of observations not usable by the software: 33 observation 1, KOKEE :WETTZELL, 0133+476, 18:30:20, quality code X-band: 0 S-band: 9 observation 6, NYALES20:SVETLOE , 1636+473, 18:34:20, quality code X-band: 9 S-band: 0 observation 7, SVETLOE :WETTZELL, 1636+473, 18:34:20, quality code X-band: 0 S-band: 0 observation 9, KOKEE :WETTZELL, 0718+793, 18:39:55, quality code X-band: 0 S-band: 9 observation 10, KOKEE :WETTZELL, 2229+695, 18:41:58, quality code X-band: 0 S-band: 9 observation 11, KOKEE :SVETLOE , 2229+695, 18:41:58, quality code X-band: 0 S-band: 9 observation 12, SVETLOE :WETTZELL, 2229+695, 18:41:58, quality code X-band: 9 S-band: 0 observation 15, KOKEE :SVETLOE , 1441+252, 18:47:01, quality code X-band: 0 S-band: 0 observation 17, KOKEE :WETTZELL, 1520+437, 18:50:52, quality code X-band: 0 S-band: 9 observation 21, KOKEE :SVETLOE , 1520+437, 18:50:52, quality code X-band: 0 S-band: 9 observation 22, SVETLOE :WETTZELL, 1520+437, 18:50:52, quality code X-band: 0 S-band: 0 observation 23, KOKEE :WETTZELL, 1342+662, 18:55:04, quality code X-band: 0 S-band: 0 observation 27, NYALES20:SVETLOE , 3C371 , 18:57:44, quality code X-band: 9 S-band: 0 observation 30, KOKEE :WETTZELL, 0016+731, 18:59:20, quality code X-band: 0 S-band: 9 observation 31, KOKEE :WETTZELL, 1441+252, 19:01:26, quality code X-band: 0 S-band: 9 observation 34, NYALES20:SVETLOE , 1441+252, 19:01:26, quality code X-band: 9 S-band: 0 observation 35, KOKEE :SVETLOE , 1441+252, 19:01:26, quality code X-band: 0 S-band: 0 observation 36, SVETLOE :WETTZELL, 1441+252, 19:01:26, quality code X-band: 0 S-band: 9 observation 37, KOKEE :WETTZELL, NRAO512 , 19:04:30, quality code X-band: 0 S-band: 9 observation 41, SVETLOE :WETTZELL, NRAO512 , 19:04:30, quality code X-band: 0 S-band: 9 observation 46, KOKEE :WETTZELL, 2356+385, 19:11:35, quality code X-band: 0 S-band: 9 observation 47, NYALES20:WETTZELL, 2356+385, 19:11:35, quality code X-band: 0 S-band: 9 observation 49, KOKEE :WETTZELL, 1441+252, 19:15:23, quality code X-band: 0 S-band: 9 observation 50, NYALES20:WETTZELL, 1441+252, 19:15:23, quality code X-band: 0 S-band: 9 observation 51, KOKEE :NYALES20, 1441+252, 19:15:23, quality code X-band: 0 S-band: 9 observation 52, NYALES20:SVETLOE , 1441+252, 19:15:23, quality code X-band: 9 S-band: 0 observation 53, KOKEE :SVETLOE , 1441+252, 19:15:23, quality code X-band: 0 S-band: 0 observation 54, SVETLOE :WETTZELL, 1441+252, 19:15:23, quality code X-band: 0 S-band: 9 observation 55, KOKEE :WETTZELL, 1520+437, 19:19:15, quality code X-band: 0 S-band: 9 observation 56, NYALES20:WETTZELL, 1520+437, 19:19:15, quality code X-band: 0 S-band: 9 observation 59, KOKEE :SVETLOE , 1520+437, 19:19:15, quality code X-band: 0 S-band: 0 observation 60, SVETLOE :WETTZELL, 1520+437, 19:19:15, quality code X-band: 0 S-band: 0 observation 61, KOKEE :WETTZELL, NRAO512 , 19:22:42, quality code X-band: 0 S-band: 9 Number of observations rejected during analysis: 15 This category consisted of usable observations from noisy baselines (KOKEE-SVETLOE and NYALES20-SVETLOE) or unusable baselines (SVETLOE-WETTZELL). Other comments: None. Parameterization: 10 parameters: UT1 offset atmosphere offset for: KOKEE NYALES20 WETTZELL clock offset, first order term, and second order term for: NYALES20 WETTZELL Clock breaks: None Session Statistics Observations: 92 scheduled 72 correlated (included in the database) 39 recoverable (usable in Solve/nuSolve) 24 used Session fit: 38.240 ps UT1 formal error: 21.12 microsec Source Performance Number of Observations Scheduled Correlated* Used 0016+731 1 1 0 0059+581 12 10 5 0133+476 6 4 1 0718+793 1 1 0 1300+580 1 1 1 1342+662 1 1 0 1418+546 1 0 0 1441+252 18 15 3 1520+437 12 12 3 1636+473 6 3 1 NRAO512 9 8 3 1803+784 6 1 0 3C371 6 6 3 2229+695 9 6 3 2356+385 3 3 1 ------------ --------- ---------- ------ Source Total 92 72 24 * Correlated means included in the database. Please note that the number of recoverable (usable) observations cannot be broken down by source for Intensive solutions.