condition mean min max 4 h after light 1920.8 1920.8 1920.8 8 h after light 2543.15 1961.7 3124.6 12 h after light 2361.3 1746.9 2975.7 4 h after dark 2261.95 1976.5 2547.4 8 h after dark 2431.35 1985.7 2877.0 12 h after dark 2293.7 1669.7 2917.7