condition	mean	min	max
4 h after light	7.832956666666666	7.7171899999999996	7.90318
8 h after light	9.37026	9.32095	9.40784
12 h after light	9.06231	8.850480000000001	9.28834
4 h after dark	8.033156666666667	7.5693	8.3376
8 h after dark	7.716466666666667	7.573360000000001	7.959230000000001
12 h after dark	7.350569999999999	7.292839999999999	7.44568