condition mean min max 4 h after light 1.294664 0.965668 1.62366 8 h after light 3.315355 2.99605 3.63466 12 h after light 17.77785 16.8533 18.7024 4 h after dark 13.4792 11.7575 15.275 8 h after dark 5.379776666666666 4.75336 5.8986 12 h after dark 2.8691166666666668 2.3043 3.87917