Saving data into an excel by MATLAB

%% put data into an excel
title = {'time','X'};
time = [0:47]' %two days, 48 hours
X = [S1.Conc.X;S2.Conc.X];

xlswrite('PutDataIntoExcel.xlsx',title); %set title

xlswrite('PutDataIntoExcel.xlsx',time,'sheet1','A2'); %put first parameter(time) data into the position
%matched the title

xlswrite('PutDataIntoExcel.xlsx',X,'sheet1','B2'); %put second parameter(X) data into specific position
%matched the title