Assume you have three signals which may overlap when plotted like so
x = linspace(154,157,100);
s1 = rand(1,100);
s2 = rand(1,100);
s3 = rand(1,100);
plot(x,s1,x,s2,x,s3)
In order to separate them, you could use an offset of a certain value. In the picture you attached, it seems the offset might be around 150.
offset = 150;
plot(x,s1,x,offset+s2,x,2*offset+s3)
