condition mean min max 4 h after light 19.681852 19.336206 20.027498 8 h after light 10.940608000000001 10.443368 11.437848 12 h after light 11.137279 10.669166 11.605392 4 h after dark 12.2847005 11.090474 13.478927 8 h after dark 13.925782000000002 11.033149 16.818415 12 h after dark 15.845374 15.845374 15.845374