how to get maxima of rho in hough table

Hi , i applyed hough transform in my image and this is the result of hough table, i must get the maxima of rho in two basic angles of theta , the one is around -65 : -60 and the other is round 30:35

How can i get them?

I tried the below code about hough but the houghpeaks function returns all the maxima peaks in the hough table. I want to detect the two basic angles as you can see

[hough,theta,rho] = hough(negfillHoles,'Theta',-90:1:89,'RhoResolution',2);

lenHough=length(hough(:));

maxpeaks=lenHough; %10000;

peaks = houghpeaks(hough,maxpeaks,'threshold',20); %50

x=theta(peaks(:,2));

y=rho(peaks(:,1));

plot(x,y,'o','color','r');

I will really appreciate your help