condition	mean	min	max
4 h after light	10.274345	9.43949	11.1092
8 h after light	7.952605	7.92272	7.98249
12 h after light	7.61046	7.12566	8.09526
4 h after dark	8.02213	7.75129	8.29297
8 h after dark	7.284364999999999	7.07527	7.49346
12 h after dark	10.793035	9.79697	11.7891