condition mean min max 4 h after light 1056.2 1056.2 1056.2 8 h after light 946.05 859.1 1033.0 12 h after light 1041.25 891.8 1190.7 4 h after dark 1059.0 1039.6 1078.4 8 h after dark 986.95 962.1 1011.8 12 h after dark 845.45 839.8 851.1