condition mean min max 4 h after light 849.3197666666666 829.3371 880.4393 8 h after light 609.0648 480.3712 674.8754 12 h after light 285.2122 240.7863 318.8206 16 h after light 770.49 696.0224 917.8471 4 h after dark 863.0615666666666 819.2091 902.6469 8 h after dark 1068.7213333333334 841.312 1245.833