condition	mean	min	max
4 h after light	9.528266666666667	9.4812	9.597000000000001
8 h after light	9.72254	9.66644	9.80408
12 h after light	9.6906	9.61006	9.747689999999999
4 h after dark	9.400346666666666	9.260489999999999	9.51954
8 h after dark	9.12953	8.9777	9.24504
12 h after dark	9.150166666666667	9.04607	9.21796