These are the files that need to be looked at, and what may need
to be addressed on each file:

 1. anc_scav.f
   a. It currently takes over 3 times as long to compute the scan
      averages for the PCAL block, as it does for the TSYS and TPI
      blocks combined; This is/was not the case when we did these
      computations through bnc_scav.f
   b. For the TPI block, since TSYS is a function of TPI, we
      expect the two blocks to have the same scans, however TPI
      doesn't account for the last scan, why?
   c. TPI only prints scan results from the 20th and 40th scans,
      but also attributes them scan 1, scan 2 time arrays. 

 2. anc_compute_tatm_opa.f
    a. When updating the provenance block, please include the phrase,
       'PROVENANCE: 3 ' into each line. The writing routine uses this
       information to write and parse the provenance block
       apropriately.
    b. you can also take updating of C_PRV to the main routine, that
       way, you have the command line.


