condition mean min max 4 h after light 6.70089 3.01472 9.44064 8 h after light 4.037839666666667 0.756759 7.52001 12 h after light 4.784026666666667 2.22081 7.73027 4 h after dark 7.171390000000001 4.81867 8.78006 8 h after dark 7.1859399999999996 3.78275 9.60097 12 h after dark 12.5752 8.51546 19.5685