condition mean min max 4 h after light 12.19383 9.76399 15.3656 8 h after light 18.59785 5.97545 28.7214 12 h after light 22.573166666666665 12.6244 31.4108 4 h after dark 27.3281 22.5058 31.2973 8 h after dark 24.9484 19.6538 29.6886 12 h after dark 16.9574 14.084 18.7805