Diffusion means it is spread out or not concentrated. Still, you and your ilk are trying to say that the entire amout of CFCs leaked is concentrated in the upper atmosphere. Do you agree that CFCs are heavier than air? If so, would you not agree that they would be diffused mostly at or near ground level? I can direct you (In fact I think I alrady have) to a web site that refutes what your web site says.