condition mean min max 3 h after light 6.74664 5.21496 8.10275 6 h after light 6.362666666666667 2.85451 8.76428 9 h after light 10.112846666666666 3.51015 18.7941 12 h after light 16.718825 11.7355 24.5139 3 h after dark 17.960266666666666 15.0742 22.6796 6 h after dark 20.4397 16.2656 24.0187 9 h after dark 18.5884 17.5908 19.6057 12 h after dark 11.8796 11.2575 12.5017