condition mean min max 4 h after light 2913.3 2913.3 2913.3 8 h after light 2909.5 2678.6 3140.4 12 h after light 3598.25 2575.1 4621.4 4 h after dark 3901.9500000000003 3146.3 4657.6 8 h after dark 3521.3999999999996 2702.4 4340.4 12 h after dark 4002.3500000000004 3990.3 4014.4