condition	mean	min	max
4 h after light	7.124663333333333	6.9581100000000005	7.306260000000001
8 h after light	6.824716666666667	6.621510000000001	7.0113
12 h after light	6.76912	6.67022	6.93658
4 h after dark	6.744463333333333	6.432869999999999	6.96168
8 h after dark	6.8240066666666666	6.57412	6.982539999999999
12 h after dark	6.8996	6.44035	7.136830000000001