AIRGLOW DATA

                            for May 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
May                                                                                            May
5- 6                     175   190   210   255                                                 830     4   208
6- 7                       *  180:  175:     *                                                 355     2   178
7- 8                       *     *     *   200   230                                           430     2   215
10-11                      *   135   205   210   180   220   190                              1140     6   190
13-14                      *   120  245:  325:     *   330   300     *                        1320     5   264
                                                                                               385     2   193
14-15                      *     *     *  190:  195:     *     *     *                        1120     4   280
17-18                                      245   270   285   320     *                        1165     4   291
18-19                                      310   350   310   195     *                         850     3   283
19-20                                           310:   260   280     *                         575     2   288
20-21                                                  235   340     *                        8170    34   240
                                                                                                        60.6574

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