condition mean min max 4 h after light 1730.0 1730.0 1730.0 8 h after light 1816.35 1638.4 1994.3 12 h after light 2466.1 2177.7 2754.5 4 h after dark 3315.65 2784.3 3847.0 8 h after dark 3878.95 3478.5 4279.4 12 h after dark 3633.15 3125.8 4140.5