condition mean min max 3 h after light 19.241033333333334 18.1684 21.0874 6 h after light 16.679199999999998 15.0443 17.5735 9 h after light 18.027033333333332 16.2906 19.8832 12 h after light 17.318925 13.867 19.3538 3 h after dark 19.70713333333333 19.4363 20.1099 6 h after dark 17.910733333333333 16.1612 18.807 9 h after dark 14.711300000000001 13.5568 16.2299 12 h after dark 12.318249999999999 11.7701 12.8664