AIPS HELP file for TECRTYPE in 31DEC24

As of Wed Sep 11 4:59:05 2024

HELP SECTION

TECRTYPE
Type: Adverb (Character*4)
Use:  Type of IONEX (TEC) data to use.
      There are many possibilities but the list seems to change
      over the years.
Null Value:  ' '
      Null value -> 'jplg'
Procedures:
   VLATECR....Calculate ionospheric delay and Faraday rotation
              corrections.  Unlike VLBATECR, it also allows APARM.
   VLBATECR...Calculate ionospheric delay and Faraday rotation
              corrections
   VLBARFI....Calibrates VLBA autocorrelations, writes out statistics
   VLBARUN....Applies amplitude and phase calibration procs to VLBA
              data.

The names of the data files changed format on a variety of dates
beginning 2022-11-27 for some and extending to 2023-08-07 data dates
for others.  The VLATECR and VLBATECR procedures know about this and
will attempt to download the appropriate one or two data files for
your observation.

TECRTYPE possibilities include

Code    Meaning

Date of format change known
casg    Final solution (Chinese Academy of Science)
esag    Final solution (European Space Agency ESOC)
codg    Final solution (Center for Orbit Determination in Europe)
igsg    Final combined solution (IGS combined)
emrg    Final solution (Space Weather Canada)
jplg    Final solution (Jet Propulsion Laboratory)
upcg    Final solution (Universitat Politecnica de Catalunya,
                        Barcelona)

esa files from 20221127 to 20230205 exist with wrong names
they can be downloaded using the web site cited above

Not recommended: They are rapid colutions and the
format dates have not been implemented immplemented
c1pg    1-day predicted solution (CODE)
c2pg    2-day predicted solution (CODE)
corg    Rapid solution (CODE)
e1pg    1-day predicted solution (ESA)
e2pg    2-day predicted solution (ESA)
ehrg    Rapid high-rate solution, one map per hour, (ESA)
esrg    Rapid solution (ESA)
ilpg    1-day predicted solution (IGS combined)
i2pg    2-day predicted solution (IGS combined)
igrg    Rapid solution (IGS combined)
u2pg    2 day predicted solution (UPC)
uhrg    Rapid high-rate solution, one map per hour, (UPC)
uprg    Rapid solution (UPC)
uqrg    Rapid high-rate solution, one map per 15 minutes, (UPC)

The previous list
c1pg (number '1'), c2pg, carg, casg, codg, corg, ehrg, emrg (good?),
esag, esrg, igrg, igsg, jplg, jprg, uhrg, upcg, uprg, uqrg, whrg, whug

EXPLAIN SECTION