condition mean min max 4 h after light 1153.7 1153.7 1153.7 8 h after light 1055.1 998.7 1111.5 12 h after light 917.0 862.6 971.4 4 h after dark 1077.65 980.7 1174.6 8 h after dark 996.35 937.7 1055.0 12 h after dark 971.8 899.8 1043.8