condition mean min max 4 h after light 1566.5231935 1362.424818 1770.621569 8 h after light 1090.932022 954.298936 1227.565108 12 h after light 605.5220395 396.350484 814.693595 4 h after dark 332.843091 224.155134 441.531048 8 h after dark 382.170697 175.55804 588.783354 12 h after dark 465.761742 465.761742 465.761742