condition mean min max 4 h after light 1918.9 1918.9 1918.9 8 h after light 2833.0 2060.6 3605.4 12 h after light 3313.3999999999996 2987.1 3639.7 4 h after dark 2855.75 2366.0 3345.5 8 h after dark 2156.35 1921.1 2391.6 12 h after dark 1793.85 1749.7 1838.0