Trying to adjust Cross section data

Happy Friday everyone,

I have two quick questions about some cross section diagrams I am trying
to do. Attached are two .pdf image files and as can be seen I know how
to adjust the y-axis labels (using the YLValues and YLLabels commands,
line 127 of .ncl code). However, I was curious if anyone knew first of
all how to make sure that my z-axis labels actually line up with the
correct values from the model data? Otherwise I can arbitrarily assign
hPa z-axis values on any model run/case that I do... and I want to make
sure everything is correctly lined up. This case is over Peruvian
mountains and all the mountainous terrain within the domain is above
3000 meters...so clearly image 1 can't be correct even though it is the
default from the script I have. Any help there would be greatly greatly
appreciated!

My 2nd question relates on how to adjust my script so that I can plot
any range in the z dimension that I want. For instance, plotting just
800 hPa to 600 hPa, or 300 to 200 hPa...rather than plotting the whole z
dimension of 1000 hPa to 50 hPa. Does anyone know how to narrow this
down? Is that something I can adjust in line 61 through 76 of the .ncl
code attached here? I've tried changing the zz=z/100 value (line 63)
and that doesn't change the z-scale.

Any thoughts or suggestions would be very helpful!

Thanks!

Paul

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