condition mean min max 4 h after light 1934.205 1873.193333 2055.416667 8 h after light 1562.778889 1343.93 1942.02 12 h after light 1024.5266667666667 702.7133333 1575.816667 1.5 h after dark 790.2188889 692.07 948.5466667 5.5 h after dark 1278.931111 1217.043333 1384.97 9.5 h after dark 1542.5933333333332 1431.213333 1658.756667