condition	mean	min	max
4 h after light	7.537413333333333	7.2991600000000005	7.71616
8 h after light	7.640283333333333	7.47892	7.786739999999999
12 h after light	8.17992	7.898339999999999	8.41152
4 h after dark	7.94813	7.70275	8.2202
8 h after dark	7.699753333333334	7.41252	7.87016
12 h after dark	7.467833333333334	7.371180000000001	7.54771