condition mean min max 4 h after light 951.7 951.7 951.7 8 h after light 782.0 718.4 845.6 12 h after light 1095.4 906.5 1284.3 4 h after dark 968.75 906.6 1030.9 8 h after dark 1098.65 1056.6 1140.7 12 h after dark 1079.3 962.6 1196.0