condition	mean	min	max
4 h after light	7.571906666666666	7.3879600000000005	7.695539999999999
8 h after light	7.678870000000001	7.635860000000001	7.7069399999999995
12 h after light	7.728793333333333	7.660139999999999	7.82885
4 h after dark	7.756633333333332	7.571339999999999	7.863339999999999
8 h after dark	7.76141	7.63076	7.9275899999999995
12 h after dark	7.535116666666666	7.38616	7.6291899999999995