condition mean min max 4 h after light 8.3807595 8.027884 8.733635 8 h after light 8.813417999999999 8.387326 9.23951 12 h after light 8.692606999999999 8.145921 9.239293 4 h after dark 8.5604805 8.387326 8.733635 8 h after dark 9.5129905 8.733635 10.292346 12 h after dark 9.581328 9.581328 9.581328