condition mean min max 4 h after light 3101.2 3101.2 3101.2 8 h after light 2954.8500000000004 2881.3 3028.4 12 h after light 3161.15 2963.3 3359.0 4 h after dark 2582.3 1652.2 3512.4 8 h after dark 2311.25 1628.4 2994.1 12 h after dark 2923.2 2839.7 3006.7