condition mean min max 0 h after light 6.911935 6.49079 7.33308 4 h after light 10.478375 9.95365 11.0031 8 h after light 10.8665 10.4849 11.2481 4 h after dark 10.132349999999999 10.1029 10.1618 8 h after dark 10.95645 10.1902 11.7227 12 h after dark 8.14792 7.02227 9.27357