List of intervals of continuous or near-continuous Prognoz 6
magnetic field data.  Note that available data files are defined
by day and not by these intervals.   
From            To         
YY MM DD HR:MN  YY MM DD HR:MN  
77-09-26 14:56  77-09-27 21:24
77-09-28 01:54  77-09-28 15:38
77-09-30 06:41  77-10-01 05:41
77-10-01 07:04  77-10-01 20:05
77-10-01 23:58  77-10-02 02:04
77-10-12 01:24  77-10-13 07:21
77-10-13 07:52  77-10-15 12:22
77-10-15 22:38  77-10-16 08:26
77-10-16 08:46  77-10-18 18:41
77-10-18 19:53  77-10-18 22:10
77-10-19 00:18  77-10-19 12:50
77-10-25 13:50  77-10-27 04:26
77-10-27 08:55  77-10-27 10:47
77-10-31 16:38  77-11-01 00:52
77-11-01 01:27  77-11-01 08:14
77-11-01 08:44  77-11-03 08:42
77-11-03 09:01  77-11-04 06:07
77-11-05 06:57  77-11-08 06:51
77-11-08 15:30  77-11-10 07:38
77-11-10 08:38  77-11-10 13:22
77-11-10 14:44  77-11-10 17:36
77-11-10 17:54  77-11-10 20:06
77-11-16 14:02  77-11-17 08:11
77-11-17 11:02  77-11-19 22:05
77-11-24 09:32  77-11-25 06:17
77-11-25 06:40  77-11-25 18:11
77-11-25 19:16  77-11-26 03:19
77-11-26 04:10  77-11-27 05:01
77-11-27 07:08  77-11-27 17:39
77-11-29 08:35  77-12-01 10:18
77-12-01 10:24  77-12-01 23:08
77-12-02 12:29  77-12-05 11:27
77-12-05 12:08  77-12-05 21:46
77-12-06 12:14  77-12-07 13:16
77-12-07 14:07  77-12-09 11:02
77-12-14 05:16  77-12-15 06:10
77-12-15 07:10  77-12-17 16:54
77-12-19 18:19  77-12-21 09:42
77-12-21 14:21  77-12-21 16:09
77-12-22 04:45  77-12-22 06:57
77-12-22 08:08  77-12-22 16:13
77-12-22 17:25  77-12-22 22:23
77-12-22 23:11  77-12-23 11:28
77-12-23 11:45  77-12-25 11:34
78-01-02 23:05  78-01-03 03:41
78-01-03 04:52  78-01-03 12:17
78-01-03 12:35  78-01-05 06:13
78-01-05 07:25  78-01-06 03:02
78-01-06 21:52  78-01-07 00:07
78-01-07 02:46  78-01-09 06:31
78-01-09 08:02  78-01-09 13:18
78-01-09 14:16  78-01-09 18:32
78-01-10 01:21  78-01-10 04:34
78-01-14 16:06  78-01-17 11:06
78-01-17 11:35  78-01-18 06:02
78-01-18 18:36  78-01-18 21:59
78-01-18 23:17  78-01-19 03:47
78-01-19 05:04  78-01-19 08:22
78-01-19 09:25  78-01-20 08:03
78-01-20 17:48  78-01-21 09:19
78-01-21 09:51  78-01-21 15:26
------------------------------