condition mean min max 4 h after light 1412.866111 1043.63 1744.965 8 h after light 1576.0083333333332 1363.486667 1726.153333 12 h after light 1969.5666663333334 1570.593333 2369.653333 1.5 h after dark 1919.8244443333333 1813.02 2104.77 5.5 h after dark 1590.131111 1505.223333 1662.643333 9.5 h after dark 1271.856667 1202.526667 1372.066667