How to plot the graph which compare the coefficients of Quantile on Quantile (average) and Quantile regression ?

Hi, All MATLAB users, Please help me to plot the following graph. I am new users. Your help would me encourage me to use MATLAB. Thanks

How to plot the graph which compare the coefficients of Quantile on Quantile (average) and Quantile regression? The data set is attached.

[Hamid Muili]

I am also in the same situation and I need to plot the comparison. Any help with this will be appreciated