condition	mean	min	max
4 h after light	7.642393333333334	7.482410000000001	7.76178
8 h after light	7.65478	7.529789999999999	7.736910000000001
12 h after light	7.508136666666667	7.34103	7.67173
4 h after dark	7.65193	7.4878	7.84598
8 h after dark	7.695856666666667	7.60193	7.809589999999999
12 h after dark	7.804223333333334	7.4166300000000005	8.06109