condition mean min max 0 h after light 1735.645 1729.74 1741.55 4 h after light 2858.3 2691.72 3024.88 8 h after light 2495.435 2486.41 2504.46 4 h after dark 895.448 840.895 950.001 8 h after dark 1650.665 1620.36 1680.97 12 h after dark 2024.795 1877.4 2172.19