condition mean min max 4 h after light 8.361473499999999 8.06252 8.660427 8 h after light 9.566058 8.644823 10.487293 12 h after light 8.899557999999999 8.644823 9.154293 4 h after dark 8.2370625 7.62333 8.850795 8 h after dark 8.64253 7.646142 9.638918 12 h after dark 8.706067 8.706067 8.706067