condition	mean	min	max
4 h after light	19.9223	19.7884	20.0562
8 h after light	16.4184	14.3316	18.5052
12 h after light	9.309435	8.22957	10.3893
4 h after dark	10.175736666666667	8.06084	13.5726
8 h after dark	7.91328	4.8222	10.0478
12 h after dark	16.081766666666667	13.4956	21.1133