% let us suppose your matrix is A,and you want toplot all the columns of A with espect to dome other variable. You havent mentioned that variable in the question. i am considering it as ' t ' .
the code will be as follows.
A= % your matrix.
t= % the x axis variable. it should have same number of elements as of the elements in one column of A ie 13.
% this code will work. message here if you find any difficulty. Give me a up thumb if this helps to you. Thanks.