Negative Target ID On Manticore

[fishersari]

Hello there, I'm still researching on mandymoore and I stumble upon a few video that the manicure tester mentioned about -99 to 0 for ferrous target ID (if I'm not mistaken). My question is what I can expect or how can I utilize from this -99 to 0 range data when detecting on the field. 

I'm sorry if this question has been answered before, I cant find it. Happy hunting wherever you at.