condition mean min max 0 h after light 4.405535 4.26422 4.54685 4 h after light 4.212925 3.9429 4.48295 8 h after light 4.79301 3.93908 5.64694 4 h after dark 6.093185 5.89077 6.2956 8 h after dark 5.025 4.57336 5.47664 12 h after dark 3.53254 3.28479 3.78029