condition mean min max 4 h after light 800.3 800.3 800.3 8 h after light 754.95 675.8 834.1 12 h after light 852.4 768.8 936.0 4 h after dark 836.4 777.4 895.4 8 h after dark 977.9499999999999 759.8 1196.1 12 h after dark 874.0999999999999 871.8 876.4