condition mean min max 4 h after light 38.01125 37.0838 38.9387 8 h after light 24.4463 24.2962 24.5964 12 h after light 23.558999999999997 23.3985 23.7195 4 h after dark 33.4916 33.0357 33.9475 8 h after dark 44.333600000000004 44.1179 44.5493 12 h after dark 51.9728 51.6424 52.3032