condition	mean	min	max
4 h after light	7.56993	7.511019999999999	7.68465
8 h after light	7.55962	7.4413	7.69468
12 h after light	7.40237	7.20925	7.568460000000001
4 h after dark	7.55955	7.3899300000000006	7.73235
8 h after dark	7.58473	7.429760000000001	7.77165
12 h after dark	7.556783333333334	7.341419999999999	7.85952