AIRGLOW DATA

                            for May 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
May                                                                                            May
5- 6                     185    75    65    60                                                 385     4    96
6- 7                       *   60:   35:     *                                                  95     2    48
7- 8                       *     *     *    45    40                                            85     2    43
10-11                      *    65    35    30    45    70   100                               345     6    58
13-14                      *    50   40:   70:     *    75    40     *                         275     5    55
                                                                                                60     2    30
14-15                      *     *     *   20:   40:     *     *     *                         275     4    69
17-18                                       55    70    70    80     *                         160     4    40
18-19                                       30    35    40    55     *                         195     3    65
19-20                                            65:    55    75     *                         160     2    80
20-21                                                   65    95     *                        2035    34    60

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