condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.07636766666666667 0.0 0.173777 4 h after dark 0.129346 0.0 0.388038 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0