condition mean min max 4 h after light 19.9820645 19.916936 20.047193 8 h after light 21.351090499999998 19.961118 22.741063 12 h after light 22.930675 22.781643 23.079707 4 h after dark 22.084289 21.427515 22.741063 8 h after dark 21.5172935 19.729027 23.30556 12 h after dark 23.347628 23.347628 23.347628