Range Report iPhone Ballistic Question

[straycat40]

So I'm trying to figure out which settings I need to use for the Atmosphere section for iPhone Ballistic and JBM.

If I'm reading station pressure off my Kestrel, what do I enter into Ballistic and JBM for altitude? I'm guessing 0.

Also, for Ballistic the Standardize Pressure needs to be set to OFF correct?

Ballistic give me a different output from above when I enter an Altitude setting.

Hopefully this makes sense.

Thanks