condition mean min max 4 h after light 2504.0 2504.0 2504.0 8 h after light 2029.35 1844.3 2214.4 12 h after light 2297.2 2024.4 2570.0 4 h after dark 2936.5 2218.4 3654.6 8 h after dark 2911.1 2851.0 2971.2 12 h after dark 2901.3 2851.9 2950.7