x=0:1:135;
y=[17.5 17.9 16.5 15.2 16.1 18.3 24.1 26.0 22.0 18.2 16.8 17.8 15.0 17.8 16.2 16.6 18.0 19.8 19.0 18.0 19.6 18.2 20.8 21.8 26.0 25.8 32.0 33.6 26.8 31.8 32.0 32.2 35.8 37.2 45.2 32.0 22.0 23.2 30.1 22.1 22.6 31.8 35.8 45.0 59.8 40.2 40.0 36.0 38.8 35.8 25.2 28.0 29.6 28.0 33.0 31.8 35.8 37.8 44.0 56.0 73.8 42.2 54.0 31.2 28.0 32.0 34.0 41.8 55.8 58.0 69.0 37.6 46.0 56.0 32.8 32.0 43.6 40.6 61.8 72.0 41.2 22.2 31.8 33.4 30.0 26.6 28.2 31.8 39.6 25.6 31.8 33.2 26.8 34.0 36.4 25.0 35.2 22.0 24.6 27.6 22.8 23.8 20.0 19.8 22.8 18.2 18.1 21.4 16.8 24.2 28.0 34.8 54.2 64.0 60.0 83.0 57.8 64.0 61.8 52.2 54.6 52.0 73.2 56.0 51.2 55.6 63.2 41.8 28.2 26.2 26.6 18.2 16.0 21.8 22.0 31.8];
h=1/sqrt(2*pi).*(1-((0.1).*x).^2).*exp(-((0.1).*x).^2/2);
f=conv(y,h);
t=0:1:270;
plot(t,f),hold on,plot(x,y),grid on
j=1;
p=0:1:270;
for i=1:136
    if f(i)*f(i+1)<=0
        p(j)=(t(i)+t(i+1))/2;
        j=j+1;
        i=i+1;
    else i=i+1;
    end;
end;
for i=1:j
    q(i)=p(i)+53.5;
    i=i+1;
end;
q