condition	mean	min	max
4 h after light	6.8819333333333335	6.68745	7.03178
8 h after light	6.83017	6.58604	6.976430000000001
12 h after light	6.91867	6.645160000000001	7.15066
4 h after dark	7.378106666666667	7.1546899999999996	7.525119999999999
8 h after dark	7.071076666666667	6.820930000000001	7.241810000000001
12 h after dark	7.232933333333333	7.04592	7.395460000000001