AIRGLOW DATA

                            for April 1991

Station:    Kiso                                          Radiation : 5893A

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
Apr.                                                                                          Apr.
5- 6                       *     *     *    30                                                  30     1    30
9-10                      30    40    45    55    60    65    50                               345     7    49
11-12                      *   55:    60    45    45    80    60    65                         410     7    59
14-15                     85    85    85    65    70    95    75    70                         630     8    79
15-16                    90:     *     *     *     *   50:    40    35                         215     4    54
                                                                                               320     6    53
16-17                            *    80    70    55    60    30    25                         145     4    36
19-20                                             30    35    35    45                         150     3    50
20-21                                                   50    45    55                         150     3    50
21-22                                                   45    40    65                        2395    43    56

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