condition mean min max 0 h after light 17.266 16.7198 17.8122 4 h after light 4.522385 3.26006 5.78471 8 h after light 4.071745 3.88854 4.25495 4 h after dark 9.08937 7.47524 10.7035 8 h after dark 9.985990000000001 9.91388 10.0581 12 h after dark 11.4307 7.597 15.2644