AIRGLOW DATA

                            for February 1991

Station:    Kiso                                          Radiation : 6300A

Longitude:137ß38'E

Latitude: 35ß48'N

                      Absolute Zenith Intensity in Rayleighs
J.S.T         18    19    20    21    22    23     0     1     2     3     4     5     6
Date/U.T.      9    10    11    12    13    14    15    16    17    18    19    20    21       Sum   Ave
1991                                                                                          1991
Feb.                                                                                          Feb.
3- 4               220   140    75                                                             435     3   145
4- 5                 *     *   90:   65:                                                       155     2    78
5- 6               135   125    70    45    40                                                 415     5    83
6- 7               180   120    95    80    60    60                                           595     6    99
7- 8                 *   155    80    55    50    45    35                                     388     6    65
                                                                                               390     7    56
8- 9                 *    75    85    55    35    30    45    65                               605     8    76
9-10               170   125    90    85    40    25    25    45     *                         295     6    49
10-11                *     *     *   55:    20     *   50:    70    70    30                   280     3    93
11-12              160     *     *     *     *   80:    40     *     *     *                  3558    46    77

Remarks : # Extrapolated or interpolated value from measurements within 10 minutes
          * Interrupted by accident or cloud  : Poor value  -- Moon shine