phi PMMA,mu / m2/(Vs),Error 4.63E-04,-4.20E-10,1.39E-11 1.60E-03,-2.98E-10,2.99E-11 5.06E-03,-2.52E-10,1.74E-11 2.01E-02,-3.77E-11,2.76E-11 4.82E-02,-7.38E-11,5.05E-11 1.53E-01,-3.40E-11,2.86E-11