condition	mean	min	max
4 h after light	7.3037133333333335	7.20564	7.3696600000000005
8 h after light	7.846399999999999	7.61412	8.05534
12 h after light	7.6115200000000005	7.4910000000000005	7.70725
4 h after dark	7.599266666666667	7.40308	7.79793
8 h after dark	7.467243333333333	7.25667	7.62322
12 h after dark	7.130893333333334	7.048430000000001	7.1945