condition	mean	min	max
0 h after light	19.76895	19.4563	20.0816
4 h after light	15.553799999999999	15.2188	15.8888
8 h after light	7.78412	7.40199	8.16625
4 h after dark	11.028205	8.68571	13.3707
8 h after dark	14.5738	13.6631	15.4845
12 h after dark	17.019199999999998	13.8232	20.2152