condition mean min max 0 h after light 9.83395 9.81179 9.85611 4 h after light 4.4465699999999995 4.02965 4.86349 8 h after light 3.09697 2.86206 3.33188 4 h after dark 5.352175 4.85515 5.8492 8 h after dark 6.020144999999999 5.93377 6.10652 12 h after dark 7.213315 6.15739 8.26924