condition mean min max 4 h after light 13.9771 12.7266 15.2276 8 h after light 8.71063 8.46645 8.95481 12 h after light 3.939195 3.4541 4.42429 4 h after dark 6.133035 5.9221 6.34397 8 h after dark 6.662039999999999 5.94905 7.37503 12 h after dark 11.504999999999999 11.3162 11.6938