condition	mean	min	max
4 h after light	7.963613333333334	7.84979	8.064630000000001
8 h after light	7.810103333333334	7.7355	7.869460000000001
12 h after light	8.167353333333335	8.06793	8.246030000000001
4 h after dark	7.83925	7.730739999999999	8.02228
8 h after dark	7.78717	7.7219	7.83184
12 h after dark	7.9763399999999995	7.87869	8.06653