condition mean min max 4 h after light 575.9 575.9 575.9 8 h after light 546.4 495.2 597.6 12 h after light 712.8 555.0 870.6 4 h after dark 1093.6 713.2 1474.0 8 h after dark 1271.3000000000002 1249.4 1293.2 12 h after dark 1074.25 1066.0 1082.5