This set of changes is to correct problems with RRFS and RRFS-based RTMA_dev1 skewT plotting. Two issues are corrected
longitudes were not consistent for -180 to +180 versus 0 to 360. Checks were added to adjust either way.
The skewT code crashed if any of the hydrometeor fields were not in the grib file, and cloud water is not currently in the files. The code was set to skip over missing fields and continue.
passed pylint, pytest needs to be checked (my own local pytest has a big).
This set of changes is to correct problems with RRFS and RRFS-based RTMA_dev1 skewT plotting. Two issues are corrected
passed pylint, pytest needs to be checked (my own local pytest has a big).
sample plots:
![999_74001_skewt_f000](https://user-images.githubusercontent.com/56739562/131734642-85fd702b-94d8-4e27-8dfd-74e2f64ab15c.png)