condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0173794 0.0 0.0286574 12 h after light 0.031401225 0.0 0.0539474 3 h after dark 0.022399366666666667 0.0 0.0374365 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0