condition mean min max 0 h after light 67.9759 66.3632 69.5886 4 h after light 41.479749999999996 40.5316 42.4279 8 h after light 29.46765 27.432 31.5033 4 h after dark 44.9356 36.1552 53.716 8 h after dark 52.4149 51.4041 53.4257 12 h after dark 54.11685 50.7084 57.5253