condition mean min max 4 h after light 10.1865415 9.484898 10.888185 8 h after light 9.3268965 9.168895 9.484898 12 h after light 9.484898 9.484898 9.484898 4 h after dark 9.2378205 7.92642 10.549221 8 h after dark 10.012467999999998 9.484898 10.540038 12 h after dark 9.484898 9.484898 9.484898