condition mean min max 4 h after light 3.474865 3.35607 3.59366 8 h after light 3.032395 2.98194 3.08285 12 h after light 4.76175 3.97431 5.54919 4 h after dark 3.134505 2.55959 3.70942 8 h after dark 3.92434 3.45091 4.39777 12 h after dark 3.62664 3.608 3.64528