Gaussian blur post processing material

The image is missing from the above response by RysenSpark about how to control the amount of blur. How do you control the amount of blur? If I adjust the offset numbers I get a more spread out blur, but staggered. Do I have to adjust the weights too to get more “samples”? Or adjust the “5” in the loop to match the number of offsets? This is what I get with a line of “float offsets] = { -20, -10, 0, 10, 20 };”.