condition mean min max 4 h after light 846.7 846.7 846.7 8 h after light 790.25 778.0 802.5 12 h after light 810.4000000000001 770.6 850.2 4 h after dark 876.75 793.3 960.2 8 h after dark 871.9000000000001 811.1 932.7 12 h after dark 747.6500000000001 741.2 754.1