How can I display value of each psi (streamline) on the curve?

a = 1 ; %RADIUS
L=.4;
c =-a/L;
b =a/L;
m =a*200; % NUMBER OF INTERVALS
[x,y]=meshgrid([c:(b-c)/m:b],[c:(b-c)/m:b]');
[I J]=find(sqrt(x.^2+y.^2)<(a-.1));
if ~isempty(I);
    x(I,J) = 0;
    y(I,J) = 0;
end
r=sqrt(x.^2+y.^2);
t=atan2(y,x);
warning off
psi=a.^2.* sin(t) .^ 2 ./r;
[DH,h2]=contour(y,x,psi,10,'-k');
hold on
m1=100;
r1=ones(1,m1+1)*a;
th=[0:2*pi/m1:2*pi];
set(polar(th,r1,'-k'),'LineWidth',1.1);
axis on
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