condition	mean	min	max
0 h after light	21.43195	20.7159	22.148
4 h after light	17.01945	16.4342	17.6047
8 h after light	10.60312	9.68784	11.5184
4 h after dark	6.252705	6.22221	6.2832
8 h after dark	14.8092	14.1875	15.4309
12 h after dark	15.44625	14.0726	16.8199