condition mean min max 4 h after light 10.640401 8.793315 12.487487 8 h after light 11.7223845 11.311203 12.133566 12 h after light 13.6229965 11.660081 15.585912 4 h after dark 10.911392 8.443771 13.379013 8 h after dark 10.874106 9.215962 12.53225 12 h after dark 11.603067 11.603067 11.603067