condition mean min max 4 h after light 2907.0 2907.0 2907.0 8 h after light 1798.75 1141.1 2456.4 12 h after light 616.85 229.2 1004.5 4 h after dark 181.05 161.6 200.5 8 h after dark 557.3000000000001 182.9 931.7 12 h after dark 2231.05 853.1 3609.0