condition mean min max 0 h after light 12.12425 11.0386 13.2099 4 h after light 7.68946 7.33771 8.04121 8 h after light 6.091195000000001 5.97937 6.20302 4 h after dark 10.520795 9.41869 11.6229 8 h after dark 11.21385 11.1668 11.2609 12 h after dark 10.272655 9.22221 11.3231