condition mean min max 4 h after light 2342.7 2342.7 2342.7 8 h after light 2478.55 1920.4 3036.7 12 h after light 2441.15 2170.8 2711.5 4 h after dark 2188.45 2138.9 2238.0 8 h after dark 2293.85 1836.6 2751.1 12 h after dark 2267.55 2220.4 2314.7