EID       Date      UT       Exposure  Cont  Bkgd
(start)  (sec)     (DN)  (DN)
swp01552  15/05/78  17:07:54    119.47  224   42
swp03299  11/11/78  03:05:32   1319.60   50   21
swp09083  23/05/80  13:20:30     49.84  201   17
swp15746  14/12/81  09:30:56   1079.58  102   19
swp17810  30/08/82  15:20:35    209.59  255   22
swp17811  30/08/82  16:25:01    479.51   68   19
swp17812  30/08/82  17:11:45   2099.48   51   21
swp28503  16/06/86  20:26:43   1199.59  149   18
swp28932  18/08/86  16:10:22     59.67  255   17
swp37010  13/09/89  04:24:13    359.50  215   16