condition	mean	min	max
4 h after light	7.234513333333333	7.000560000000001	7.430689999999999
8 h after light	7.2828	7.0575	7.45032
12 h after light	7.076293333333334	6.9195	7.2853
4 h after dark	7.1376	7.03343	7.20885
8 h after dark	7.069146666666667	7.033239999999999	7.120660000000001
12 h after dark	7.1671	7.14637	7.198989999999999