AIRGLOW DATA for February 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 Feb. Feb. 3- 4 25 20 25 70 3 23 4- 5 * * 30: 45: 75 2 38 5- 6 25 25 25 25 25 125 5 25 6- 7 65 55 50 60 50 60 340 6 57 7- 8 * 50 45 45 50 55 65 310 6 52 535 7 76 8- 9 * 50 55 65 85 90 95 95 455 8 57 9-10 70 60 55 45 40 45 65 75 * 290 6 48 10-11 * * * 45: 50 * 50: 50 50 45 105 3 35 11-12 40 * * * * 30: 35 * * * 2305 46 50 18.57678 Remarks : # Extrapolated or interpolated value from measurements within 10 minutes * Interrupted by accident or cloud : Poor value -- Moon shine