clc;
clear;
data=xlsread('ECC-700x600-400-th2-Astep U-RF.xlsx');
[m,n]=size(data);
[Fmax,LocFmax]=max(data(: ,2));
Umax=data(LocFmax,1);
F85=Fmax*0.85;
[~,LocU85]=min(abs(data(LocFmax:m,2)-F85));
LocU85=LocU85+LocFmax-1;
U85=data(LocU85,1);
rho=U85/Umax
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