condition mean min max 4 h after light 924.2 924.2 924.2 8 h after light 865.8 833.1 898.5 12 h after light 721.85 695.1 748.6 4 h after dark 770.95 688.3 853.6 8 h after dark 740.55 727.6 753.5 12 h after dark 734.75 698.6 770.9