my @data = ( 
['Mar1','Mar2','Mar3','Apr1','Apr2','Apr3','May1','May2','May3],
[1,0,2,0,4,0], 
[2,0,1,0,5,0], 
[0,3,0,3,0,6], 
[0,4,0,4,0,7],
[3,0,4,0,5,0],
[0,0,0,0,0,0],
);