condition mean min max 0 h after light 13.37795 12.9661 13.7898 4 h after light 15.6555 14.5487 16.7623 8 h after light 15.6863 13.4215 17.9511 4 h after dark 21.89975 20.5145 23.285 8 h after dark 16.56575 15.738 17.3935 12 h after dark 14.975 13.2881 16.6619