condition	mean	min	max
4 h after light	7.911625	7.412272	8.410978
8 h after light	7.2134350000000005	6.936861	7.490009
12 h after light	7.938599999999999	7.203708	8.673492
4 h after dark	7.808789	7.801416	7.816162
8 h after dark	7.7009045	7.191802	8.210007
12 h after dark	7.964751	7.964751	7.964751