[Will S]

I've spent more than an hour searching for an answer so thought I'd better ask other users. Selecting these units for the model, I'd assume the output pressure units should be pounds per square foot. When I looked at the pressures in my model, they are astoundingly too high (or negative). I then thought it was because the pressures are absolute rather than gauge...still astoundingly high (and some impossible negative). It also switches from positive to negative within one cell block, with no transition. Am I missing something here, or is my model just broken?

Some of my data....

The visualizations of the model and all other outputs seem reasonable. I just don't get it. Any ideas?

x y z p v hyfd
271.75 205.66264 752.25 -547217.38 1.8042365 8.3300419
272.25 205.66264 752.25 -540091.69 1.5180495 8.3300419
272.75 205.66264 752.25 -532619.38 1.3160932 8.3300419
273.25 205.66264 752.25 -525889.5 1.1408727 8.3300419
273.75 205.66264 752.25 -520472.59 0.93963432 8.3300419
274.25 205.66264 752.25 -516046.25 0.69941252 8.3300419
274.75 205.66264 752.25 -512142.38 0.47867304 8.3300419
275.25 205.66264 752.25 -508268.88 0.33344299 8.3300419
275.75 205.66264 752.25 -504521.06 0.2240238 8.3300419
276.25 205.66264 752.25 -500844.69 0.10055891 8.3300419
276.75 205.66264 752.25 497331.03 0.036355048 8.3300419
277.25 205.66264 752.25 493956.66 0.18747687 8.3300419
277.75 205.66264 752.25 490864.31 0.34542078 8.3300419
278.25 205.66264 752.25 487967.06 0.50996113 8.3300419
278.75 205.66264 752.25 485164.44 0.67545855 8.3300419