condition	mean	min	max
4 h after light	6.2591133333333335	6.17344	6.3961
8 h after light	6.312486666666667	6.20715	6.472519999999999
12 h after light	6.447753333333334	6.14077	6.826860000000001
4 h after dark	6.46766	6.26323	6.803910000000001
8 h after dark	6.437916666666667	6.3472800000000005	6.574380000000001
12 h after dark	6.4816199999999995	6.26626	6.842689999999999