condition mean min max 4 h after light 1.67413 1.62427 1.72399 8 h after light 1.288415 1.16686 1.40997 12 h after light 1.38178 1.23794 1.52562 4 h after dark 1.8521466666666666 1.07674 2.63422 8 h after dark 1.3323566666666666 1.26344 1.44408 12 h after dark 1.55829 1.14273 2.01991