condition	mean	min	max
4 h after light	6.203106666666667	6.08389	6.332000000000001
8 h after light	6.330256666666666	6.24883	6.46205
12 h after light	6.2112533333333335	6.17995	6.24247
4 h after dark	6.2228200000000005	6.0285	6.54365
8 h after dark	6.27788	6.17288	6.3929599999999995
12 h after dark	6.067323333333333	5.9759199999999995	6.113919999999999