[IGS-Equipment-Files] igs14_2215.atx: Update including two new receiver antenna calibrations

[Arturo Villiger]

Dear IGS colleagues,

The absolute IGS antenna correction file (igs14_wwww.atx) has been updated.
The new release is called 'igs14_2215.atx'. It contains the following
changes:

1) Two additional antenna type calibrations has been added that were
performed by Geo++ GmbH:
- One robot calibration provided by Geomax AG has been added:
GMXZENITH06     NONE
- One robot calibration provided by UNAVCO, INC. has been added:
   TRM59800.99     SCIS


The updated antenna correction model is available at

https://files.igs.org/pub/station/general/igs14_2215.atx
and

https://files.igs.org/pub/station/general/igs14.atx

With best regards,

Arturo Villiger on behalf of the IGS Antenna Working Group