condition	mean	min	max
4 h after light	7.450773333333333	7.238860000000001	7.77491
8 h after light	7.021003333333334	6.700310000000001	7.5556
12 h after light	7.457	7.12754	8.01746
4 h after dark	7.520486666666667	7.0754600000000005	8.28197
8 h after dark	7.661160000000001	7.1174100000000005	8.33192
12 h after dark	7.6384099999999995	7.186089999999999	7.91569