condition mean min max 3 h after light 1.7467733333333333 1.43826 1.94437 6 h after light 0.9423686666666667 0.362313 1.75937 9 h after light 0.9932129999999999 0.602729 1.33726 12 h after light 3.2341033333333336 1.50885 5.79865 3 h after dark 2.5918099999999997 1.67424 3.69011 6 h after dark 1.8318100000000002 1.01343 3.01189 9 h after dark 4.22386 2.83634 4.94498 12 h after dark 1.6919633333333333 1.22041 2.26376