condition mean min max 4 h after light 13281.9 13281.9 13281.9 8 h after light 13415.3 12883.2 13947.4 12 h after light 14657.1 13492.2 15822.0 4 h after dark 15653.85 14779.2 16528.5 8 h after dark 12810.8 12548.5 13073.1 12 h after dark 11426.0 10444.1 12407.9