condition mean min max 4 h after light 931.6 931.6 931.6 8 h after light 1162.8 934.0 1391.6 12 h after light 1282.1999999999998 1176.8 1387.6 4 h after dark 1004.45 897.9 1111.0 8 h after dark 925.95 852.0 999.9 12 h after dark 785.3 564.7 1005.9