condition	mean	min	max
4 h after light	7.042996666666667	6.6163	7.30843
8 h after light	7.2294	6.67605	7.56425
12 h after light	7.351193333333334	7.02165	7.520760000000001
4 h after dark	7.41068	7.16875	7.588539999999999
8 h after dark	7.403783333333334	7.20706	7.509580000000001
12 h after dark	7.27869	7.02411	7.429689999999999