condition mean min max 4 h after light 7.805855 7.53505 8.07666 8 h after light 8.444765 7.85815 9.03138 12 h after light 12.0144 11.4017 12.6271 4 h after dark 14.062899999999999 12.338 14.9946 8 h after dark 13.4738 12.5406 14.0023 12 h after dark 10.101556666666667 8.64827 11.3819