condition	mean	min	max
4 h after light	7.351403333333333	7.23995	7.536789999999999
8 h after light	7.46307	7.2710300000000005	7.66662
12 h after light	7.437656666666667	7.293880000000001	7.639060000000001
4 h after dark	7.741343333333334	7.58712	7.975860000000001
8 h after dark	7.95868	7.8161	8.23756
12 h after dark	8.285683333333333	8.27538	8.29175