condition	mean	min	max
4 h after light	9.363109999999999	9.181519999999999	9.477839999999999
8 h after light	9.107846666666667	8.89248	9.28209
12 h after light	9.43446	9.368	9.48939
4 h after dark	9.654786666666666	9.61187	9.69978
8 h after dark	9.734833333333333	9.55684	9.83261
12 h after dark	9.74911	9.69638	9.82673