condition mean min max 4 h after light 8.822851499999999 8.203214 9.442489 8 h after light 10.165103 10.078198 10.252008 12 h after light 8.9182215 8.688756 9.147687 4 h after dark 9.078475 8.748069 9.408881 8 h after dark 10.0397 9.408881 10.670519 12 h after dark 9.703067 9.703067 9.703067