condition mean min max 0 h after light 2.589825 1.81498 3.36467 4 h after light 3.553195 3.53383 3.57256 8 h after light 3.5854749999999997 3.48246 3.68849 4 h after dark 3.362405 3.15202 3.57279 8 h after dark 4.99172 4.94518 5.03826 12 h after dark 2.98754 2.68812 3.28696