condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.065415 0.0 0.196245 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.07620933333333334 0.0 0.228628 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0