condition	mean	min	max
4 h after light	6.437423333333334	6.23549	6.649780000000001
8 h after light	6.347456666666666	6.29041	6.4013
12 h after light	6.398750000000001	6.20052	6.7609
4 h after dark	6.273553333333333	5.973669999999999	6.60296
8 h after dark	6.405386666666667	6.220940000000001	6.761239999999999
12 h after dark	6.36107	6.24279	6.56093