condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.120193 0.0 0.360579 9 h after light 0.0 0.0 0.0 12 h after light 0.19251633333333332 0.0 0.577549 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.224029 0.0 0.672087 12 h after dark 0.0 0.0 0.0