condition mean min max 4 h after light 1121.2 1121.2 1121.2 8 h after light 1042.85 874.5 1211.2 12 h after light 1086.35 1023.7 1149.0 4 h after dark 962.7 843.2 1082.2 8 h after dark 910.6500000000001 831.7 989.6 12 h after dark 906.6 870.7 942.5