condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0164273 0.0 0.0492819 9 h after light 0.0 0.0 0.0 12 h after light 0.013665125 0.0 0.0546605 3 h after dark 0.025287566666666667 0.0 0.0758627 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