condition mean min max 4 h after light 14.0593815 12.487487 15.631276 8 h after light 15.984089 15.635322 16.332856 12 h after light 32.4834855 16.148328 48.818643 4 h after dark 16.568353000000002 16.096241 17.040465 8 h after dark 18.428262 17.883719 18.972805 12 h after dark 13.487177 13.487177 13.487177