condition mean min max 0 h after light 3.75574 3.5814 3.93008 4 h after light 3.31815 3.27386 3.36244 8 h after light 3.2714749999999997 2.93828 3.60467 4 h after dark 3.95999 3.93246 3.98752 8 h after dark 4.687525 4.55005 4.825 12 h after dark 3.343355 2.56113 4.12558