AIRGLOW DATA

                            for February 1991

Station:    Kiso                                          Radiation : 5577A

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                75    90   100                                                             265     3    88
4- 5                 *     *  120:  145:                                                       265     2   133
5- 6                60    85   100   120   160                                                 525     5   105
6- 7                70    75   120   180   210   195                                           850     6   142
7- 8                 *   100   115   140   170   170   125                                     820     6   137
                                                                                              1230     7   176
8- 9                 *   195   220   210   185   145   145   130                               670     8    84
9-10                70    60    65    80   100   110   100    85     *                         640     6   107
10-11                *     *     *  105:   140     *  140:   110    80    65                   260     3    87
11-12               65     *     *     *     *   90:   105     *     *     *                  5525    46   120
                                                                                                        44.361

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