condition	mean	min	max
4 h after light	7.800943333333334	7.6407300000000005	7.9930699999999995
8 h after light	7.7179400000000005	7.66144	7.775
12 h after light	7.827616666666667	7.687130000000001	7.985539999999999
4 h after dark	8.008563333333333	7.85831	8.2577
8 h after dark	7.8641700000000005	7.742960000000001	7.94192
12 h after dark	7.929756666666667	7.783339999999999	8.04785