condition mean min max 0 h after light 1.3241465 0.883813 1.76448 4 h after light 4.407385 3.59574 5.21903 8 h after light 5.27488 2.6942 7.85556 4 h after dark 6.950595 4.33235 9.56884 8 h after dark 7.853009999999999 7.82006 7.88596 12 h after dark 5.228745 5.17117 5.28632