condition mean min max 4 h after light 14.8383025 14.712333 14.964272 8 h after light 16.4104405 15.312952 17.507929 12 h after light 14.8227235 13.720212 15.925235 4 h after dark 16.069001999999998 15.137228 17.000776 8 h after dark 15.078219 14.231203 15.925235 12 h after dark 17.24701 17.24701 17.24701