function [output_arg]=MaxDeviation(sigma,rVolt,SEVolt,rVAngel,SEVAngel,rPD,rQD,PD,QD)
t1=[rVolt;rVAngel;rPD;rQD];
t2=[SEVolt;SEVAngel;PD;QD];
% t1=[rVolt;rPD;rQD];
% t2=[SEVolt;PD;QD];
t3=(t1(t1~=0)-double(t2(t1~=0)))./t1(t1~=0);
t4=abs(t3);
output_arg=max(t4);
find(t4==output_arg);
end