condition	mean	min	max
4 h after light	6.7654733333333334	6.70764	6.8782
8 h after light	6.729013333333333	6.66118	6.86307
12 h after light	6.586063333333334	6.30204	6.873819999999999
4 h after dark	6.886383333333334	6.6677100000000005	7.176310000000001
8 h after dark	6.748036666666667	6.520630000000001	6.956519999999999
12 h after dark	6.71493	6.5959699999999994	6.792330000000001