IVS Analysis Report for I21351 ($21DEC17XU) 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: This is the analysis report for the final (third) release of 21DEC17XU. WACO's final release is identical to its first release on 12/17 with only data from ISHIOKA and WETTZELL. The WACO correlator had generated a second release earlier today in which the correlator tried to add data from KOKEE, but this effort failed because WACO found that KOKEE had observed the wrong schedule. The second release also lost some previously correlated ISHIOKA/WETTZELL observations, so WACO has released its original version as the final version, restoring the observations. The GSFC AC has reanlyzed the new release, generating a third GSFC vgosDB file set. The new file set and the solution results are slightly different than on Friday due to small changes in a priori input values. Number of observations rejected during correlation: 0 Number of observations not usable by the software: 1 observation 23, ISHIOKA :WETTZELL, 0736+017, 19:42:52, quality code X: 9 S: 0, fringe code X: ' ' S: ' ' Number of observations rejected during analysis: 0 Other comments: None. Parameterization: 6 parameters: UT1 offset atmosphere offset for: ISHIOKA WETTZELL clock offset, first order term, and second order term for: WETTZELL Clock breaks: None Session statistics Observations: 71 scheduled 24 correlated (included in the database) 23 recoverable (usable in Solve/nuSolve) 23 used Session fit: 34.243 ps UT1 formal error: 18.18 microsec Source Performance Number of Observations Scheduled Correlated* Used 2000+472 1 0 0 2229+695 1 1 1 0529+483 1 1 1 0748+126 1 1 1 1144+402 3 0 0 1546+027 3 0 0 0016+731 12 4 4 0642+449 5 5 5 0736+017 2 2 1 0814+425 15 5 5 1030+415 5 0 0 1039+811 15 5 5 1406-076 5 0 0 1751+288 2 0 0 ------------ --------- ---------- ------ Source Total 71 24 23 * Correlated means included in database. Please note that the number of recoverable (usable) observations cannot be broken down by source for Intensive solutions.