EID       Date      UT       Exposure  Cont  Bkgd
(start)  (sec)     (DN)  (DN)
swp13516  16/03/81  20:41:02    599.52  186   22
swp18649  24/11/82  19:04:49    299.70   75   17
swp18789  13/12/82  11:44:08    899.76  165   18
swp19287  18/02/83  06:19:03    899.76  191   19
swp19288  18/02/83  07:34:01    899.76  216   18
swp19372  02/03/83  21:38:57    599.52  163   18
swp24007  19/09/84  15:12:58    899.76  204   18
swp28183  17/04/86  02:15:39    899.76  197   18
swp29510  21/10/86  20:04:35    899.76  177   19
swp30151  24/01/87  07:43:13    899.76  152   19
swp32182  28/10/87  17:23:53    899.76  153   18
swp33765  15/06/88  22:39:45    899.76  153   18
swp35533  11/02/89  05:01:34    899.76  133   17
swp43581  09/01/92  08:19:31    599.52   85   17
swp44161  12/03/92  23:00:23    599.52  105   21
swp44162  13/03/92  00:12:13   1199.59  172   18
swp44641  10/05/92  21:50:31    479.51   91   18
swp47022  22/02/93  12:29:45    899.76  127   18
swp48248  27/07/93  09:06:50   1199.59   36   17
swp48251  27/07/93  12:52:22   1499.82  211   44