condition	mean	min	max
4 h after light	18.913893333333334	17.40116	21.81697
8 h after light	19.36844	13.8195	22.582829999999998
12 h after light	13.054871	8.007703	17.30195
16 h after light	19.946976666666668	14.694479999999999	26.82674
4 h after dark	24.54332	24.07357	24.9546
8 h after dark	20.02849666666667	15.39644	27.65594