condition mean min max 0 h after light 12.3155 11.7017 12.9293 4 h after light 8.196245000000001 7.9177 8.47479 8 h after light 11.005749999999999 10.1583 11.8532 4 h after dark 10.4431 10.2532 10.633 8 h after dark 10.409199999999998 10.1976 10.6208 12 h after dark 12.3893 11.4314 13.3472