condition mean min max 0 h after light 9.897335 8.27757 11.5171 4 h after light 11.18455 10.6549 11.7142 8 h after light 11.51875 10.2985 12.739 4 h after dark 13.80375 13.0977 14.5098 8 h after dark 14.89385 14.6152 15.1725 12 h after dark 11.3511 11.0219 11.6803