condition mean min max 4 h after light 3666.2 3666.2 3666.2 8 h after light 3987.0 3546.3 4427.7 12 h after light 3368.25 1853.0 4883.5 4 h after dark 2226.35 1701.0 2751.7 8 h after dark 2443.7 2209.9 2677.5 12 h after dark 3059.65 2315.4 3803.9