Hello, everyone. I encountered some problems when doing the Yamaguchi decomposition.

**Problem one:**

Comparing other decomposition results, why the result of the Yamaguchi decomposition has a black margin, as follows in the figure?

**Problem two:**

I think the black margin is the null value, but why is it showing the dB value as -150?

The figure shows the dB value of the double bounce band equal to -150 after doing band math.

**Problem three:**

Can remove the null value? If can, how can I do it?

Thank you.

Looking forward to your reply.