condition	mean	min	max
4 h after light	6.350373333333334	6.30881	6.38776
8 h after light	6.4471	6.34087	6.5982
12 h after light	6.37142	6.26595	6.54209
4 h after dark	6.389223333333334	6.31953	6.46045
8 h after dark	6.164783333333333	5.8684199999999995	6.33362
12 h after dark	6.23748	5.99219	6.6211899999999995