PVO Orbit SPK, JPL SSD Solution circa 1999 =========================================================================== Created by Boris Semenov, NAIF/JPL, October 21, 2011 Objects in the Ephemeris -------------------------------------------------------- This file contains ephemeris data for the Pioneer Venus Orbiter (PVO, Pioneer 12) spacecraft. The NAIF ID code for PVO is -12. Approximate Time Coverage -------------------------------------------------------- This file covers the following time interval: COVERAGE BEGIN TIME (UTC) COVERAGE END TIME (UTC) ------------------------- ------------------------ 1978-DEC-09 09:59:10.816 1982-SEP-07 23:59:06.817 Due to the way the source trajectory files were generated and the lack of good quality tracking data for some periods during the mission the trajectory coverage during the interval above is NOT continuous and has almost 100 gaps ranging in size from minutes to hours to days to many months (1979-JUL-11 ... 1979-DEC-19, 1980-DEC-04 ... 1981-NOV-06). The complete list of covered time intervals is provided in Appendix 1 below. Pedigree -------------------------------------------------------- This SPK file contains PVO orbit reconstruction provided by Alex Konopliv of the Solar System Dynamics Group (SSD), JPL. This reconstruction was performed in 1998 as part of the Venus gravity work that involved reprocessing of PVO and Magellan data described in: Konopliv, A. S., W. B. Barendt, and W. L. Sjogren, "Venus Gravity: 180th Degree and Order Model", Icarus 139, 3-8, 1999, Article ID icar.1999.6086 @ http://www.idealibrary.com The trajectory data stored in this SPK was provided to NAIF as 138 NIO files each containing data for a single solution arc. The start and stop times for each of the arcs are provided in Appendix 3. The NIO files were converted to SPK format using NAIF's NIOSPK utility version 8.2.0 and merged together using using NAIF's DAFCAT utility version 1.0. Approximately 30% of the arcs overlapped each other. The summary of discontinuities that exist at these overlaps is provided in Appendix 2. Contacts -------------------------------------------------------- If you have any questions regarding this data contact Alex Konopliv, SSD/JPL Alexander.S.Konopliv@jpl.nasa.gov or: Boris Semenov, NAIF/JPL, Boris.Semenov@jpl.nasa.gov Appendix 1: Trajectory Coverage =========================================================================== The coverage summary of this SPK file provided below was generated the BRIEF utility program Version 4.0.0: Start of Interval (UTC) End of Interval (UTC) ----------------------------- ----------------------------- 1978-DEC-09 09:59:10.816 1978-DEC-11 04:59:10.816 1978-DEC-11 05:59:10.816 1978-DEC-13 04:59:10.816 1978-DEC-16 00:59:10.816 1978-DEC-20 00:59:10.816 1978-DEC-20 06:59:10.816 1978-DEC-22 22:59:10.816 1978-DEC-23 00:59:10.816 1978-DEC-27 23:59:10.816 1978-DEC-28 03:59:10.816 1979-JAN-03 05:59:09.816 1979-JAN-11 09:59:09.815 1979-JAN-16 10:58:09.815 1979-JAN-17 11:59:09.815 1979-JAN-24 07:59:09.815 1979-JAN-24 12:59:09.815 1979-JAN-31 07:59:09.815 1979-JAN-31 10:59:09.815 1979-FEB-02 00:59:09.815 1979-FEB-02 02:59:09.815 1979-FEB-07 07:59:09.815 1979-FEB-07 10:59:09.815 1979-FEB-13 20:59:09.814 1979-FEB-14 10:59:09.814 1979-FEB-17 00:59:09.814 1979-FEB-17 04:59:09.814 1979-FEB-21 05:58:09.814 1979-FEB-22 22:59:09.814 1979-FEB-27 06:59:09.814 1979-FEB-27 10:59:09.814 1979-MAR-03 00:59:09.814 1979-MAR-03 03:59:09.814 1979-MAR-13 12:59:09.814 1979-MAR-14 00:59:09.814 1979-APR-04 00:29:09.814 1979-APR-04 01:59:09.814 1979-APR-24 02:58:09.814 1979-APR-25 11:59:09.814 1979-APR-30 02:59:09.814 1979-APR-30 12:59:09.814 1979-MAY-08 06:59:09.814 1979-MAY-11 02:59:09.814 1979-MAY-16 07:59:09.814 1979-MAY-16 09:59:09.814 1979-MAY-24 07:59:09.814 1979-MAY-24 11:59:09.814 1979-MAY-28 07:59:09.815 1979-MAY-29 09:59:09.815 1979-MAY-31 17:59:09.815 1979-JUN-01 01:59:09.815 1979-JUN-06 06:59:09.815 1979-JUN-06 09:59:09.815 1979-JUN-14 07:59:09.815 1979-JUN-14 11:59:09.815 1979-JUN-22 07:59:09.815 1979-JUN-22 11:59:09.815 1979-JUN-26 00:59:09.815 1979-JUN-26 03:59:09.815 1979-JUL-11 17:59:09.816 1979-DEC-19 03:59:09.816 1979-DEC-27 12:59:09.816 1979-DEC-27 21:59:09.816 1980-JAN-03 10:59:08.816 1980-JAN-03 21:59:08.815 1980-JAN-08 10:59:08.815 1980-JAN-09 08:59:08.815 1980-JAN-15 04:59:08.815 1980-JAN-15 21:59:08.815 1980-JAN-22 12:59:08.815 1980-JAN-22 23:59:08.815 1980-JAN-29 12:59:08.815 1980-JAN-29 22:59:08.815 1980-FEB-05 19:44:08.815 1980-FEB-06 08:59:08.815 1980-FEB-07 19:59:08.815 1980-FEB-08 07:59:08.815 1980-FEB-28 12:59:08.814 1980-FEB-28 19:59:08.814 1980-MAR-14 14:59:08.814 1980-MAR-14 21:29:08.814 1980-APR-01 16:59:08.814 1980-APR-01 22:49:08.814 1980-APR-08 00:59:08.814 1980-APR-09 14:59:08.814 1980-APR-15 22:59:08.814 1980-APR-19 16:59:08.814 1980-APR-22 15:59:08.814 1980-APR-22 22:44:08.814 1980-APR-29 03:59:08.814 1980-APR-29 23:59:08.814 1980-MAY-06 00:58:08.814 1980-MAY-06 23:59:08.814 1980-MAY-13 14:59:08.814 1980-MAY-14 09:59:08.814 1980-MAY-20 02:59:08.814 1980-MAY-21 10:59:08.814 1980-JUN-03 21:58:08.815 1980-JUN-03 21:59:08.815 1980-JUN-19 08:59:08.815 1980-JUN-19 21:54:08.815 1980-JUN-26 08:58:08.815 1980-JUN-26 20:09:08.815 1980-JUL-10 02:59:08.816 1980-JUL-10 20:59:08.816 1980-JUL-13 09:59:08.816 1980-JUL-13 21:59:08.816 1980-JUL-28 10:59:08.816 1980-JUL-30 23:59:08.816 1980-SEP-23 10:59:08.817 1980-SEP-25 00:59:08.817 1980-DEC-04 00:59:08.816 1981-NOV-06 13:48:07.817 1981-NOV-09 06:59:07.817 1981-NOV-12 04:59:07.817 1981-NOV-16 06:59:07.817 1981-NOV-19 22:59:07.817 1981-NOV-23 06:59:07.817 1981-NOV-26 22:59:07.817 1981-NOV-30 06:59:07.816 1981-DEC-02 13:50:07.816 1981-DEC-29 02:59:07.816 1981-DEC-29 10:00:07.816 1982-JAN-20 05:59:07.815 1982-JAN-20 09:59:07.815 1982-JAN-23 06:59:07.815 1982-JAN-24 22:59:07.815 1982-JAN-29 06:59:07.815 1982-JAN-30 22:59:07.815 1982-FEB-03 05:59:07.815 1982-FEB-03 09:59:07.815 1982-FEB-05 06:59:07.815 1982-FEB-06 22:59:07.815 1982-FEB-10 06:59:07.814 1982-FEB-13 22:59:07.814 1982-FEB-17 06:59:07.814 1982-FEB-20 22:59:07.814 1982-FEB-24 06:59:07.814 1982-FEB-27 22:59:07.814 1982-MAR-02 05:59:07.814 1982-MAR-02 09:59:07.814 1982-MAR-04 06:59:07.814 1982-MAR-06 22:59:07.814 1982-MAR-10 06:59:07.814 1982-MAR-13 22:59:07.814 1982-MAR-17 06:59:07.814 1982-MAR-20 22:59:07.814 1982-MAR-23 23:49:07.814 1982-MAR-27 22:59:07.814 1982-MAR-30 23:49:07.814 1982-APR-03 22:59:07.814 1982-APR-06 05:59:07.814 1982-APR-06 09:59:07.814 1982-APR-09 06:59:07.814 1982-APR-10 22:59:07.814 1982-APR-13 23:49:07.814 1982-APR-17 22:59:07.814 1982-APR-20 23:49:07.814 1982-APR-24 22:59:07.814 1982-APR-27 23:49:07.814 1982-MAY-01 22:59:07.814 1982-MAY-04 23:49:07.814 1982-MAY-08 22:59:07.814 1982-MAY-11 23:49:07.814 1982-MAY-15 22:59:07.814 1982-MAY-18 23:49:07.814 1982-MAY-22 22:59:07.814 1982-MAY-25 23:49:07.814 1982-MAY-29 22:59:07.815 1982-JUN-01 23:49:07.815 1982-JUN-05 23:29:07.815 1982-JUN-09 00:28:07.815 1982-JUN-12 23:29:07.815 1982-JUN-15 23:59:07.815 1982-JUN-19 23:29:07.815 1982-JUN-22 23:59:07.815 1982-JUN-26 23:29:07.815 1982-JUN-29 23:59:07.815 1982-JUL-03 23:29:06.815 1982-JUL-06 23:59:06.816 1982-JUL-10 23:29:06.816 1982-JUL-13 23:59:06.816 1982-JUL-17 23:29:06.816 1982-JUL-20 23:59:06.816 1982-JUL-24 23:29:06.816 1982-JUL-27 23:59:06.816 1982-JUL-31 23:29:06.816 1982-AUG-03 23:59:06.816 1982-AUG-07 23:29:06.816 1982-AUG-10 05:59:06.816 1982-AUG-14 23:29:06.817 1982-AUG-17 23:59:06.817 1982-AUG-20 23:29:06.817 1982-AUG-24 23:59:06.817 1982-AUG-28 23:29:06.817 1982-AUG-31 23:59:06.817 1982-SEP-04 23:29:06.817 1982-SEP-07 23:59:06.817 Appendix 2: Segment Boundary Discontinuity Summary =========================================================================== This SPK file contains a large number of SPK segments that came from original individual SPK files. Although, each segment provides continuous trajectory within the interval that it covers, in general a position and velocity discontinuity exists at the boundary of the segment and the segments whose coverage immediately precede and follow it. The times and magnitudes of these discontinuities are provided in the table included in this Appendix. The top portion of the table contains the name of this SPK file. All descriptive lines in the top portion of the file start with the ``#'' character to allow direct plotting of the data in the freeware ``gnuplot'' application. The table consists of 4 columns. The first column is the UTC time at which a segment boundary with discontinuity occurs. The last three columns (2..4) contain view coordinate frame components -- ``down track'' (this direction is parallel to the velocity vector), ``normal to plane'' (this direction is computed as cross product of position vector by velocity vector) and ``in plane'' (this direction is computed as a cross product of ``down track'' by ``normal to plane'') -- of the difference between the state vectors computed at that UTC time defining segment boundary at which a discontinuity exists. The units are kilometers. The pairs of segments and discontinuity times are determined using an algorithm that emulates the standard SPK loading priority -- ``last loaded segment takes precedence''. Therefore, the discontinuities summarized in the file are those which a user reading file would actually see. The difference components in the view coordinate frame were computed for each discontinuity using the following algorithm: -- A single state was computed from each pair of segment the J2000 frame at the time of discontinuity. -- For this pair of states, a position difference vector was computed by subtracting the state computed from the segment with higher priority from the state computed from segment with lower priority. Then, a frame transformation matrix rotating these difference vectors from J2000 to the view coordinate frame defined by the state obtained from the higher priority segment was computed, and the position difference vector was rotated to the view frame coordinates using this matrix. The segment boundary discontinuities for this file are: # # Summary of discontinuities at segment boundaries for # SPK file pvo_ssd1999.bsp: # # BOUNDARY TIME (UTC) DOWNTRK INPLANE NORMAL #----------------------- ------- ------- ------- 1979-03-08T03:59:09.814 -0.646 0.420 0.291 1979-03-18T00:59:09.814 -0.794 0.973 0.629 1979-03-22T23:59:09.814 0.308 -0.394 -0.292 1979-03-28T23:59:09.814 -0.295 0.459 0.376 1979-04-10T01:59:09.814 0.407 -0.537 -0.653 1979-04-15T01:59:09.814 -0.150 0.217 0.309 1979-04-19T01:59:09.814 -0.043 0.071 0.118 1979-07-01T03:59:09.815 0.575 -0.708 0.062 1979-07-06T17:29:09.816 -0.741 -1.044 0.379 1979-12-21T21:59:09.816 0.606 0.549 -0.233 1980-02-13T07:59:08.814 -0.031 -0.038 -0.106 1980-02-18T17:59:08.814 0.074 -0.050 -0.185 1980-02-23T17:59:08.814 0.053 -0.038 -0.264 1980-03-07T19:59:08.814 -0.106 0.049 -0.315 1980-03-19T21:29:08.814 0.109 -0.029 0.093 1980-03-23T21:29:08.814 -0.208 0.053 -0.114 1980-03-28T21:29:08.814 0.245 -0.073 0.106 1980-05-25T20:59:08.814 0.635 -0.154 -0.063 1980-05-30T20:59:08.815 0.659 -0.246 -0.068 1980-06-08T21:59:08.815 -0.629 0.209 0.065 1980-06-12T20:24:08.815 -0.341 0.251 0.009 1980-07-03T20:59:08.815 0.198 -0.203 0.014 1980-07-21T21:59:08.816 -0.988 1.070 -0.007 1980-08-09T09:59:08.816 0.127 0.217 -0.096 1980-08-16T23:59:08.817 -0.232 0.202 0.062 1980-08-26T23:59:08.817 0.299 -0.268 -0.100 1980-09-05T23:59:08.817 -0.123 0.139 0.062 1980-09-15T23:59:08.817 0.308 -0.362 -0.201 1980-10-05T00:59:08.817 -0.501 0.571 0.474 1980-10-15T00:59:08.817 0.272 -0.330 -0.353 1980-10-25T00:59:08.817 -0.226 0.291 0.430 1980-11-04T00:59:08.817 -0.331 0.464 1.088 1980-11-14T00:59:08.817 0.139 -0.196 -1.348 1980-11-23T00:59:08.817 -0.025 0.038 -0.360 1981-12-09T10:00:07.816 0.128 -0.097 -0.045 1981-12-15T10:00:07.816 -0.383 0.294 0.142 1981-12-22T09:59:07.816 0.094 -0.074 -0.042 1982-01-05T10:00:07.815 -0.563 0.431 0.276 1982-01-12T09:59:07.815 0.206 -0.154 -0.106 Appendix 3: Summary of Arcs in the SSD1999 PVO Trajectory Set =========================================================================== The first line in each pair provides the arc's start and stop time while the second line provides the times of the first and the last tracking data points used in the arc's OD solution. ARC010 09-DEC-1978 10:00:00 TO 11-DEC-1978 04:00:00 9-DEC-1978 11:27:00 TO 11-DEC-1978 03:52:00 ARC020 11-DEC-1978 06:00:00 TO 13-DEC-1978 04:00:00 11-DEC-1978 06:24:00 TO 13-DEC-1978 03:56:00 ARC040 16-DEC-1978 01:00:00 TO 20-DEC-1978 00:00:00 16-DEC-1978 01:27:00 TO 19-DEC-1978 22:48:00 ARC050 20-DEC-1978 07:00:00 TO 22-DEC-1978 22:00:00 20-DEC-1978 07:22:00 TO 22-DEC-1978 20:59:30 ARC060 23-DEC-1978 01:00:00 TO 27-DEC-1978 23:00:00 23-DEC-1978 01:24:00 TO 27-DEC-1978 22:44:00 ARC070 28-DEC-1978 04:00:00 TO 03-JAN-1979 05:00:00 28-DEC-1978 04:25:00 TO 3-JAN-1979 04:37:00 ARC090 11-JAN-1979 10:00:00 TO 16-JAN-1979 09:59:00 11-JAN-1979 10:21:00 TO 16-JAN-1979 09:09:00 ARC100 17-JAN-1979 12:00:00 TO 24-JAN-1979 07:00:00 17-JAN-1979 12:25:00 TO 24-JAN-1979 06:46:00 ARC110 24-JAN-1979 13:00:00 TO 31-JAN-1979 07:00:00 24-JAN-1979 13:22:00 TO 31-JAN-1979 06:54:00 ARC120 31-JAN-1979 11:00:00 TO 02-FEB-1979 00:00:00 31-JAN-1979 11:37:00 TO 1-FEB-1979 23:53:00 ARC130 02-FEB-1979 03:00:00 TO 07-FEB-1979 07:00:00 2-FEB-1979 03:27:00 TO 7-FEB-1979 06:58:00 ARC140 07-FEB-1979 11:00:00 TO 13-FEB-1979 20:00:00 7-FEB-1979 11:20:30 TO 13-FEB-1979 19:59:10 ARC150 14-FEB-1979 11:00:00 TO 17-FEB-1979 00:00:00 14-FEB-1979 11:20:30 TO 16-FEB-1979 23:53:00 ARC160 17-FEB-1979 05:00:00 TO 21-FEB-1979 04:59:00 17-FEB-1979 06:13:00 TO 21-FEB-1979 04:58:30 ARC170 22-FEB-1979 23:00:00 TO 27-FEB-1979 06:00:00 23-FEB-1979 00:07:00 TO 27-FEB-1979 05:26:00 ARC180 27-FEB-1979 11:00:00 TO 03-MAR-1979 00:00:00 27-FEB-1979 12:12:00 TO 2-MAR-1979 23:47:00 ARC190 03-MAR-1979 04:00:00 TO 08-MAR-1979 04:00:00 3-MAR-1979 04:29:00 TO 8-MAR-1979 03:53:00 ARC200 08-MAR-1979 04:00:00 TO 13-MAR-1979 12:00:00 8-MAR-1979 04:23:00 TO 13-MAR-1979 11:55:00 ARC010 14-MAR-1979 01:00:00 TO 18-MAR-1979 00:59:00 14-MAR-1979 01:20:30 TO 18-MAR-1979 00:56:00 ARC012 18-MAR-1979 01:00:00 TO 22-MAR-1979 23:00:00 18-MAR-1979 01:26:00 TO 22-MAR-1979 22:49:00 ARC020 23-MAR-1979 00:00:00 TO 28-MAR-1979 23:59:00 23-MAR-1979 00:25:00 TO 28-MAR-1979 23:55:00 ARC022 29-MAR-1979 00:00:00 TO 03-APR-1979 23:30:00 29-MAR-1979 00:45:00 TO 3-APR-1979 23:29:30 ARC030 04-APR-1979 02:00:00 TO 10-APR-1979 01:59:00 4-APR-1979 02:28:00 TO 10-APR-1979 01:57:00 ARC032 10-APR-1979 02:00:00 TO 15-APR-1979 01:59:00 10-APR-1979 02:27:00 TO 15-APR-1979 01:56:00 ARC040 15-APR-1979 02:00:00 TO 19-APR-1979 01:59:00 15-APR-1979 05:56:00 TO 19-APR-1979 01:50:00 ARC042 19-APR-1979 02:00:00 TO 24-APR-1979 01:59:00 19-APR-1979 02:30:00 TO 24-APR-1979 01:54:00 ARC050 25-APR-1979 12:00:00 TO 30-APR-1979 02:00:00 25-APR-1979 12:20:30 TO 30-APR-1979 01:55:00 ARC060 30-APR-1979 13:00:00 TO 08-MAY-1979 06:00:00 30-APR-1979 13:27:00 TO 8-MAY-1979 05:54:00 ARC070 11-MAY-1979 03:00:00 TO 16-MAY-1979 07:00:00 11-MAY-1979 04:09:00 TO 16-MAY-1979 06:54:00 ARC080 16-MAY-1979 10:00:00 TO 24-MAY-1979 07:00:00 16-MAY-1979 10:26:00 TO 24-MAY-1979 06:45:00 ARC090 24-MAY-1979 12:00:00 TO 28-MAY-1979 07:00:00 24-MAY-1979 12:26:00 TO 28-MAY-1979 06:55:00 ARC100 29-MAY-1979 10:00:00 TO 31-MAY-1979 17:00:00 29-MAY-1979 10:20:30 TO 31-MAY-1979 16:51:00 ARC110 01-JUN-1979 02:00:00 TO 06-JUN-1979 06:00:00 1-JUN-1979 02:22:00 TO 6-JUN-1979 05:59:30 ARC120 06-JUN-1979 10:00:00 TO 14-JUN-1979 07:00:00 6-JUN-1979 10:24:00 TO 14-JUN-1979 06:57:00 ARC130 14-JUN-1979 12:00:00 TO 22-JUN-1979 07:00:00 14-JUN-1979 12:55:00 TO 22-JUN-1979 06:56:00 ARC140 22-JUN-1979 12:00:00 TO 26-JUN-1979 00:00:00 22-JUN-1979 12:20:30 TO 25-JUN-1979 23:54:30 ARC150 26-JUN-1979 04:00:00 TO 01-JUL-1979 03:59:00 26-JUN-1979 04:21:30 TO 1-JUL-1979 03:49:00 ARC152 01-JUL-1979 04:00:00 TO 06-JUL-1979 17:00:00 1-JUL-1979 04:29:00 TO 6-JUL-1979 16:58:00 ARC160 06-JUL-1979 17:30:00 TO 11-JUL-1979 17:00:00 6-JUL-1979 17:58:00 TO 11-JUL-1979 16:59:00 ARC010 19-DEC-1979 04:00:00 TO 21-DEC-1979 22:00:00 19-DEC-1979 06:24:10 TO 21-DEC-1979 21:51:00 ARC011 21-DEC-1979 22:00:00 TO 27-DEC-1979 12:00:00 21-DEC-1979 22:21:00 TO 27-DEC-1979 11:55:00 ARC020 27-DEC-1979 22:00:00 TO 03-JAN-1980 10:00:00 27-DEC-1979 22:20:30 TO 3-JAN-1980 09:59:30 ARC030 03-JAN-1980 22:00:00 TO 08-JAN-1980 10:00:00 3-JAN-1980 22:20:30 TO 8-JAN-1980 07:42:02 ARC040 09-JAN-1980 09:00:00 TO 15-JAN-1980 04:00:00 9-JAN-1980 23:07:00 TO 15-JAN-1980 00:10:00 ARC050 15-JAN-1980 22:00:00 TO 22-JAN-1980 12:00:00 15-JAN-1980 22:20:30 TO 22-JAN-1980 11:53:00 ARC060 23-JAN-1980 00:00:00 TO 29-JAN-1980 12:00:00 23-JAN-1980 00:26:00 TO 29-JAN-1980 11:54:00 ARC070 29-JAN-1980 23:00:00 TO 05-FEB-1980 18:45:00 29-JAN-1980 23:25:00 TO 5-FEB-1980 18:37:00 ARC071 06-FEB-1980 09:00:00 TO 07-FEB-1980 19:00:00 6-FEB-1980 09:20:30 TO 7-FEB-1980 17:55:00 ARC080 08-FEB-1980 08:00:00 TO 13-FEB-1980 07:59:00 8-FEB-1980 09:01:00 TO 13-FEB-1980 07:58:30 ARC082 13-FEB-1980 08:00:00 TO 18-FEB-1980 17:59:00 13-FEB-1980 08:20:03 TO 18-FEB-1980 17:57:00 ARC090 18-FEB-1980 18:00:00 TO 23-FEB-1980 17:59:00 18-FEB-1980 19:01:00 TO 23-FEB-1980 17:52:00 ARC092 23-FEB-1980 18:00:00 TO 28-FEB-1980 12:00:00 23-FEB-1980 19:01:00 TO 28-FEB-1980 11:59:30 ARC100 28-FEB-1980 20:00:00 TO 07-MAR-1980 19:59:00 28-FEB-1980 20:25:00 TO 7-MAR-1980 19:50:00 ARC110 07-MAR-1980 20:00:00 TO 14-MAR-1980 14:00:00 7-MAR-1980 20:30:00 TO 14-MAR-1980 13:52:00 ARC120 14-MAR-1980 21:30:00 TO 19-MAR-1980 21:29:00 14-MAR-1980 22:20:30 TO 19-MAR-1980 21:24:00 ARC122 19-MAR-1980 21:30:00 TO 23-MAR-1980 21:29:00 19-MAR-1980 21:54:00 TO 23-MAR-1980 21:23:00 ARC130 23-MAR-1980 21:30:00 TO 28-MAR-1980 21:29:00 23-MAR-1980 21:53:00 TO 28-MAR-1980 21:22:00 ARC132 28-MAR-1980 21:30:00 TO 01-APR-1980 16:00:00 28-MAR-1980 21:52:00 TO 1-APR-1980 15:42:00 ARC140 01-APR-1980 22:50:00 TO 08-APR-1980 00:00:00 2-APR-1980 01:53:00 TO 7-APR-1980 23:50:00 ARC150 09-APR-1980 15:00:00 TO 15-APR-1980 22:00:00 9-APR-1980 22:50:00 TO 15-APR-1980 21:59:00 ARC160 19-APR-1980 17:00:00 TO 22-APR-1980 15:00:00 19-APR-1980 17:58:00 TO 22-APR-1980 14:50:00 ARC170 22-APR-1980 22:45:00 TO 29-APR-1980 03:00:00 23-APR-1980 00:53:00 TO 29-APR-1980 02:49:00 ARC180 30-APR-1980 00:00:00 TO 05-MAY-1980 23:59:00 30-APR-1980 02:05:00 TO 5-MAY-1980 23:58:00 ARC190 07-MAY-1980 00:00:00 TO 13-MAY-1980 14:00:00 7-MAY-1980 11:00:50 TO 13-MAY-1980 13:51:00 ARC200 14-MAY-1980 10:00:00 TO 20-MAY-1980 02:00:00 15-MAY-1980 00:08:00 TO 20-MAY-1980 00:48:00 ARC210 21-MAY-1980 11:00:00 TO 25-MAY-1980 21:00:00 21-MAY-1980 11:20:30 TO 25-MAY-1980 20:52:00 ARC220 25-MAY-1980 21:00:00 TO 30-MAY-1980 20:59:00 25-MAY-1980 21:22:00 TO 30-MAY-1980 20:52:40 ARC222 30-MAY-1980 21:00:00 TO 03-JUN-1980 20:59:00 30-MAY-1980 21:22:40 TO 3-JUN-1980 20:57:00 ARC230 03-JUN-1980 22:00:00 TO 08-JUN-1980 21:59:00 3-JUN-1980 22:27:00 TO 8-JUN-1980 21:49:00 ARC232 08-JUN-1980 22:00:00 TO 12-JUN-1980 20:00:00 8-JUN-1980 22:29:00 TO 12-JUN-1980 19:50:00 ARC240 12-JUN-1980 20:25:00 TO 19-JUN-1980 08:00:00 12-JUN-1980 22:10:00 TO 19-JUN-1980 07:51:00 ARC260 19-JUN-1980 21:55:00 TO 26-JUN-1980 07:59:00 20-JUN-1980 00:04:00 TO 26-JUN-1980 07:55:00 ARC280 26-JUN-1980 20:10:00 TO 03-JUL-1980 20:09:00 27-JUN-1980 20:02:00 TO 3-JUL-1980 19:37:00 ARC290 03-JUL-1980 21:00:00 TO 10-JUL-1980 02:00:00 3-JUL-1980 21:23:00 TO 10-JUL-1980 01:55:00 ARC300 10-JUL-1980 21:00:00 TO 13-JUL-1980 09:00:00 10-JUL-1980 23:03:00 TO 13-JUL-1980 08:59:00 ARC310 13-JUL-1980 22:00:00 TO 21-JUL-1980 21:59:00 14-JUL-1980 01:05:00 TO 21-JUL-1980 21:52:00 ARC320 21-JUL-1980 22:00:00 TO 28-JUL-1980 10:00:00 21-JUL-1980 22:32:00 TO 28-JUL-1980 09:55:00 ARC020 31-JUL-1980 00:00:00 TO 09-AUG-1980 10:00:00 31-JUL-1980 00:28:00 TO 9-AUG-1980 09:52:00 ARC030 09-AUG-1980 10:00:00 TO 17-AUG-1980 00:00:00 9-AUG-1980 10:22:00 TO 16-AUG-1980 23:58:00 ARC040 17-AUG-1980 00:00:00 TO 26-AUG-1980 23:59:00 17-AUG-1980 00:28:00 TO 26-AUG-1980 23:51:00 ARC050 27-AUG-1980 00:00:00 TO 05-SEP-1980 23:59:00 27-AUG-1980 00:21:00 TO 5-SEP-1980 23:56:00 ARC060 06-SEP-1980 00:00:00 TO 15-SEP-1980 23:59:00 6-SEP-1980 00:26:00 TO 15-SEP-1980 23:56:00 ARC070 16-SEP-1980 00:00:00 TO 23-SEP-1980 10:00:00 16-SEP-1980 00:26:00 TO 23-SEP-1980 09:58:00 ARC080 25-SEP-1980 01:00:00 TO 05-OCT-1980 00:59:00 25-SEP-1980 01:36:00 TO 4-OCT-1980 19:47:30 ARC090 05-OCT-1980 01:00:00 TO 15-OCT-1980 00:59:00 5-OCT-1980 04:12:00 TO 14-OCT-1980 18:58:35 ARC100 15-OCT-1980 01:00:00 TO 25-OCT-1980 00:59:00 15-OCT-1980 07:29:00 TO 25-OCT-1980 00:51:00 ARC110 25-OCT-1980 01:00:00 TO 04-NOV-1980 00:59:00 25-OCT-1980 01:21:00 TO 3-NOV-1980 22:24:30 ARC120 04-NOV-1980 01:00:00 TO 14-NOV-1980 00:59:00 4-NOV-1980 12:53:00 TO 13-NOV-1980 14:30:00 ARC130 14-NOV-1980 01:00:00 TO 23-NOV-1980 00:00:00 14-NOV-1980 05:34:00 TO 22-NOV-1980 23:57:00 ARC140 23-NOV-1980 01:00:00 TO 04-DEC-1980 00:00:00 23-NOV-1980 01:27:00 TO 3-DEC-1980 23:32:30 ARC001 06-NOV-1981 13:49:00 TO 09-NOV-1981 06:00:00 6-NOV-1981 14:12:00 TO 9-NOV-1981 05:39:00 ARC002 12-NOV-1981 05:00:00 TO 16-NOV-1981 06:00:00 13-NOV-1981 00:51:30 TO 16-NOV-1981 05:39:00 ARC003 19-NOV-1981 23:00:00 TO 23-NOV-1981 06:00:00 20-NOV-1981 00:51:30 TO 23-NOV-1981 05:39:00 ARC004 26-NOV-1981 23:00:00 TO 30-NOV-1981 06:00:00 27-NOV-1981 00:51:40 TO 30-NOV-1981 05:39:00 ARC005 02-DEC-1981 13:51:00 TO 09-DEC-1981 10:00:00 3-DEC-1981 23:45:30 TO 9-DEC-1981 09:50:00 ARC006 09-DEC-1981 10:01:00 TO 15-DEC-1981 10:00:00 9-DEC-1981 10:31:00 TO 15-DEC-1981 09:50:00 ARC007 15-DEC-1981 10:01:00 TO 22-DEC-1981 10:00:00 15-DEC-1981 10:38:00 TO 22-DEC-1981 09:55:00 ARC008 22-DEC-1981 10:00:00 TO 29-DEC-1981 02:00:00 22-DEC-1981 10:25:00 TO 29-DEC-1981 01:59:30 ARC009 29-DEC-1981 10:01:00 TO 05-JAN-1982 10:00:00 29-DEC-1981 13:52:00 TO 5-JAN-1982 09:19:00 ARC010 05-JAN-1982 10:01:00 TO 12-JAN-1982 10:00:00 5-JAN-1982 10:22:00 TO 12-JAN-1982 09:51:00 ARC011 12-JAN-1982 10:00:00 TO 20-JAN-1982 05:00:00 12-JAN-1982 10:21:00 TO 17-JAN-1982 04:53:00 ARC012 20-JAN-1982 10:00:00 TO 23-JAN-1982 06:00:00 21-JAN-1982 00:02:30 TO 23-JAN-1982 04:51:00 ARC013 24-JAN-1982 23:00:00 TO 29-JAN-1982 06:00:00 25-JAN-1982 00:25:30 TO 29-JAN-1982 04:20:00 ARC014 30-JAN-1982 23:00:00 TO 03-FEB-1982 05:00:00 31-JAN-1982 00:02:30 TO 3-FEB-1982 04:58:00 ARC015 03-FEB-1982 10:00:00 TO 05-FEB-1982 06:00:00 3-FEB-1982 10:23:00 TO 5-FEB-1982 04:30:00 ARC016 06-FEB-1982 23:00:00 TO 10-FEB-1982 06:00:00 7-FEB-1982 00:02:30 TO 10-FEB-1982 04:30:30 ARC017 13-FEB-1982 23:00:00 TO 17-FEB-1982 06:00:00 14-FEB-1982 00:02:30 TO 17-FEB-1982 04:30:00 ARC018 20-FEB-1982 23:00:00 TO 24-FEB-1982 06:00:00 21-FEB-1982 00:02:30 TO 24-FEB-1982 04:30:30 ARC019 27-FEB-1982 23:00:00 TO 02-MAR-1982 05:00:00 28-FEB-1982 00:02:30 TO 2-MAR-1982 04:42:30 ARC020 02-MAR-1982 10:00:00 TO 04-MAR-1982 06:00:00 2-MAR-1982 10:25:00 TO 4-MAR-1982 04:30:30 ARC021 06-MAR-1982 23:00:00 TO 10-MAR-1982 06:00:00 7-MAR-1982 00:02:30 TO 10-MAR-1982 04:30:30 ARC022 13-MAR-1982 23:00:00 TO 17-MAR-1982 06:00:00 14-MAR-1982 00:02:30 TO 17-MAR-1982 04:27:00 ARC023 20-MAR-1982 23:00:00 TO 23-MAR-1982 22:50:00 21-MAR-1982 00:02:30 TO 23-MAR-1982 21:07:00 ARC024 27-MAR-1982 23:00:00 TO 30-MAR-1982 22:50:00 28-MAR-1982 00:02:30 TO 30-MAR-1982 21:14:00 ARC025 03-APR-1982 23:00:00 TO 06-APR-1982 05:00:00 4-APR-1982 00:02:30 TO 6-APR-1982 04:47:30 ARC026 06-APR-1982 10:00:00 TO 09-APR-1982 06:00:00 6-APR-1982 10:28:00 TO 9-APR-1982 04:29:30 ARC027 10-APR-1982 23:00:00 TO 13-APR-1982 22:50:00 11-APR-1982 00:02:30 TO 13-APR-1982 21:32:00 ARC028 17-APR-1982 23:00:00 TO 20-APR-1982 22:50:00 18-APR-1982 00:02:30 TO 20-APR-1982 21:25:00 ARC029 24-APR-1982 23:00:00 TO 27-APR-1982 22:50:00 25-APR-1982 00:02:30 TO 27-APR-1982 21:32:00 ARC030 01-MAY-1982 23:00:00 TO 04-MAY-1982 22:50:00 2-MAY-1982 00:02:30 TO 4-MAY-1982 21:30:00 ARC031 08-MAY-1982 23:00:00 TO 11-MAY-1982 22:50:00 9-MAY-1982 00:02:30 TO 11-MAY-1982 21:31:00 ARC032 15-MAY-1982 23:00:00 TO 18-MAY-1982 22:50:00 16-MAY-1982 00:02:30 TO 18-MAY-1982 22:15:00 ARC033 22-MAY-1982 23:00:00 TO 25-MAY-1982 22:50:00 23-MAY-1982 00:02:30 TO 25-MAY-1982 21:27:00 ARC034 29-MAY-1982 23:00:00 TO 01-JUN-1982 22:50:00 30-MAY-1982 00:04:30 TO 1-JUN-1982 22:43:30 ARC035 05-JUN-1982 23:30:00 TO 08-JUN-1982 23:29:00 6-JUN-1982 00:02:30 TO 8-JUN-1982 22:58:30 ARC036 12-JUN-1982 23:30:00 TO 15-JUN-1982 23:00:00 13-JUN-1982 00:07:30 TO 15-JUN-1982 21:22:00 ARC037 19-JUN-1982 23:30:00 TO 22-JUN-1982 23:00:00 20-JUN-1982 00:02:30 TO 22-JUN-1982 21:31:00 ARC038 26-JUN-1982 23:30:00 TO 29-JUN-1982 23:00:00 27-JUN-1982 00:02:30 TO 29-JUN-1982 20:49:00 ARC039 03-JUL-1982 23:30:00 TO 06-JUL-1982 23:00:00 4-JUL-1982 00:02:30 TO 6-JUL-1982 21:15:00 ARC040 10-JUL-1982 23:30:00 TO 13-JUL-1982 23:00:00 11-JUL-1982 00:02:30 TO 13-JUL-1982 21:16:00 ARC041 17-JUL-1982 23:30:00 TO 20-JUL-1982 23:00:00 18-JUL-1982 00:02:30 TO 20-JUL-1982 20:02:00 ARC042 24-JUL-1982 23:30:00 TO 27-JUL-1982 23:00:00 25-JUL-1982 00:02:30 TO 27-JUL-1982 21:25:00 ARC043 31-JUL-1982 23:30:00 TO 03-AUG-1982 23:00:00 1-AUG-1982 00:02:30 TO 3-AUG-1982 18:12:00 ARC044 07-AUG-1982 23:30:00 TO 10-AUG-1982 05:00:00 8-AUG-1982 00:02:00 TO 10-AUG-1982 04:26:30 ARC045 14-AUG-1982 23:30:00 TO 17-AUG-1982 23:00:00 15-AUG-1982 00:02:30 TO 17-AUG-1982 19:34:00 ARC046 20-AUG-1982 23:30:00 TO 24-AUG-1982 23:00:00 21-AUG-1982 00:02:30 TO 24-AUG-1982 18:30:00 ARC047 28-AUG-1982 23:30:00 TO 31-AUG-1982 23:00:00 29-AUG-1982 00:05:30 TO 31-AUG-1982 19:03:00 ARC048 04-SEP-1982 23:30:00 TO 07-SEP-1982 23:00:00 5-SEP-1982 00:02:30 TO 7-SEP-1982 19:35:00 End of comments.