condition mean min max 4 h after light 2733.6 2733.6 2733.6 8 h after light 2691.85 2453.5 2930.2 12 h after light 2531.05 2291.8 2770.3 4 h after dark 3103.5 2061.8 4145.2 8 h after dark 3717.65 3339.2 4096.1 12 h after dark 3454.9 3310.4 3599.4