condition	mean	min	max
4 h after light	7.866333333333333	7.66348	8.095089999999999
8 h after light	8.06462	7.900339999999999	8.36581
12 h after light	8.21032	8.02767	8.451139999999999
4 h after dark	7.7881	7.649189999999999	7.97111
8 h after dark	7.96901	7.64124	8.20074
12 h after dark	7.964493333333333	7.8154699999999995	8.1227