condition mean min max 4 h after light 23.972151 18.556413 29.387889 8 h after light 20.2464005 18.229806 22.262995 12 h after light 20.5294955 20.480152 20.578839 4 h after dark 27.3304125 21.581277 33.079548 8 h after dark 28.378582 26.9795 29.777664 12 h after dark 23.021841 23.021841 23.021841