condition mean min max 4 h after light 399.4 399.4 399.4 8 h after light 458.35 398.7 518.0 12 h after light 430.55 346.6 514.5 4 h after dark 647.85 539.1 756.6 8 h after dark 742.45 718.9 766.0 12 h after dark 758.9000000000001 683.1 834.7