condition	mean	min	max
4 h after light	6.9168666666666665	6.84933	6.95113
8 h after light	7.314773333333333	7.232419999999999	7.37484
12 h after light	7.153090000000001	7.129560000000001	7.177630000000001
4 h after dark	7.15116	7.0826	7.28632
8 h after dark	7.2682899999999995	7.140789999999999	7.40256
12 h after dark	7.209896666666666	7.0415399999999995	7.40603