condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.021379033333333335 0.0 0.0641371 9 h after light 0.017782633333333332 0.0 0.0533479 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0