condition	mean	min	max
4 h after light	7.1528366666666665	7.127910000000001	7.18985
8 h after light	7.40177	7.24477	7.557989999999999
12 h after light	7.70093	7.6137	7.80514
4 h after dark	7.572396666666666	7.429939999999999	7.65678
8 h after dark	7.268016666666667	7.0189	7.44062
12 h after dark	7.12684	7.05375	7.176539999999999