condition	mean	min	max
4 h after light	8.886166666666666	8.66075	9.20237
8 h after light	9.09454	8.99132	9.25099
12 h after light	9.21612	9.04942	9.32864
4 h after dark	9.152383333333333	9.0406	9.27679
8 h after dark	8.703796666666666	8.51865	9.05717
12 h after dark	8.46873	8.25577	8.74078