condition mean min max 0 h after light 4.13153 4.09593 4.16713 2 h after light 10.65445 10.5096 10.7993 4 h after light 18.4429 18.2925 18.5933 8 h after light 5.33711 4.83368 5.84054 12 h after light 9.14947 8.61316 9.68578 2 h after dark 13.36295 12.1243 14.6016 4 h after dark 6.401755 5.51433 7.28918 8 h after dark 4.307565 3.70209 4.91304 12 h after dark 4.13312 3.77129 4.49495