condition mean min max 4 h after light 1.141874 0.723138 1.56061 8 h after light 0.773239 0.559624 0.986854 12 h after light 0.958252 0.927435 0.989069 4 h after dark 1.5199533333333335 1.07701 2.33082 8 h after dark 1.4695633333333333 1.18039 1.73934 12 h after dark 1.75056 1.08647 2.58214