condition mean min max 4 h after light 14.94765 14.8049 15.0904 8 h after light 11.4145 10.8995 11.9295 12 h after light 10.100365 9.74243 10.4583 4 h after dark 13.24685 13.1311 13.3626 8 h after dark 13.11575 13.0606 13.1709 12 h after dark 13.02725 12.3185 13.736