condition mean min max 4 h after light 861.2241666666666 757.0685 929.4062 8 h after light 715.0598666666667 642.6929 769.0208 12 h after light 495.7944333333333 412.5995 599.8399 16 h after light 844.7913 647.1939 1215.685 4 h after dark 641.5544 565.5231 701.9508 8 h after dark 497.3988 401.4085 592.1454