condition mean min max 2 h after light 2.7268566666666665 2.05689 3.74246 6 h after light 2.2226066666666666 1.33947 2.7678 10 h after light 1.91625 1.18098 2.62106 14 h after light 2.449995 1.34876 3.22806 18 h after light 2.333345 1.74922 3.35535 2 h after dark 2.714875 1.39185 4.46376