EID       Date      UT       Exposure  Cont  Bkgd
(start)  (sec)     (DN)  (DN)
swp07506  30/12/79  10:50:23  12599.58   74   43
swp07938  13/02/80  18:28:54  11999.51   81   54
swp21247  06/10/83  15:16:01  11999.51   66   40
swp21481  08/11/83  15:08:16  16739.81   94   47
swp22109  26/01/84  09:34:56  18719.82   92   54
swp24123  05/10/84  14:01:53  16799.61   86   51
swp24368  01/11/84  11:51:42  17399.68   90   52
swp25479  18/03/85  03:30:04  17999.74   88   52
swp26906  09/10/85  15:57:38  16919.63   99   57
swp27790  25/02/86  07:00:20  12899.81   78   46