condition mean min max 4 h after light 934.3 934.3 934.3 8 h after light 920.35 899.6 941.1 12 h after light 871.3499999999999 789.3 953.4 4 h after dark 956.75 854.0 1059.5 8 h after dark 1109.8 992.6 1227.0 12 h after dark 1081.75 928.7 1234.8