condition mean min max 4 h after light 2341.0 2341.0 2341.0 8 h after light 1947.65 1931.9 1963.4 12 h after light 1977.8 1639.4 2316.2 4 h after dark 2750.4 2146.8 3354.0 8 h after dark 2995.8500000000004 2683.3 3308.4 12 h after dark 2466.3999999999996 2366.1 2566.7