as mentioned in the Sarproz 2019.0 release post, you can now apply some operations to mitigate the atmospheric delay on single (or few) interferograms.
We published the operations to perform in this tutorial: https://www.sarproz.com/2019-tutorials/
Please read it carefully, in particular the note on the last slide: this exercise helps you suppressing some signals on the interferogram. However, you have to judge if the suppressed signals are truly atmospheric delay. Be aware that you could suppress also movement!!
This technique should be used with care and when you have no alternatives. The standard time series analysis remains the most robust solution to estimate and mitigate atmospheric delay!!
To be able to use those functions you need to update the software via the manage version module: https://sarproz.com/manual/manage_version.html