condition mean min max 4 h after light 9.279628333333333 6.9453130000000005 12.20861 8 h after light 4.1278673333333336 2.4948200000000003 5.775211 12 h after light 6.1332629999999995 5.575216 6.734106 16 h after light 6.2831426666666665 3.408724 9.381727 4 h after dark 10.639011666666667 9.172185 12.197330000000001 8 h after dark 9.626923666666666 7.9038509999999995 10.910630000000001