Author Contributions
G.W. involved input data preparation; W.X.C. involved output data
collection and analysis; X.F.Z. wrote the software code; Q.H, H.G, Q.Q,
X.J and L.Z. verified algebraic calculations; S.T.S. deployed software
code to web page; P.Z. tested and verified the code and final data; J.Y.
overall designed and managed the project and made the manuscript
preparation.