condition mean min max 4 h after light 1148.1 1148.1 1148.1 8 h after light 1030.5 933.2 1127.8 12 h after light 1185.05 1039.1 1331.0 4 h after dark 1174.65 1135.8 1213.5 8 h after dark 1060.3 969.8 1150.8 12 h after dark 976.2 860.0 1092.4