condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.1324485 0.0 0.264897 12 h after light 0.1602105 0.0 0.320421 4 h after dark 0.1055685 0.0 0.211137 8 h after dark 0.0529035 0.0 0.105807 12 h after dark 0.1041665 0.0 0.208333