[IGSMAIL-6670] igs08_1708.atx: Update including Block IIF-3 satellite SVN65/PRN24

[Robert Khachikyan]

Dear IGS colleagues!

The absolute IGS antenna correction file (igs08_wwww.atx) has been 
updated. The new release is called 'igs08_1708.atx'. It contains the 
following changes:

The third Block IIF satellite launched on 4 October 2012 has been added:

G24 (G065)

The following PRELIMINARY phase center offset (PCO) values were assigned:

PCO_X =  39.4 cm
PCO_Y =   0.0 cm
PCO_Z = 160.0 cm

NANU message 2012062:
> NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2012062
> SUBJ: SVN65 (PRN24) LAUNCH JDAY 278
> 1.     NANU TYPE: LAUNCH
>        NANU NUMBER: 2012062
>        NANU DTG: 041222Z OCT 2012
>        SVN: 65
>        PRN: 24
>        LAUNCH JDAY: 278
>        LAUNCH TIME ZULU: 1210
>
> 2. GPS SATELLITE SVN65 (PRN24) WAS LAUNCHED ON JDAY 278.
>    A USABINIT NANU WILL BE SENT WHEN THE SATELLITE IS SET ACTIVE TO 
> SERVICE.
http://cgls.uscg.mil/pipermail/nanu/2012-October/001447.html

The updated antenna correction model is available at
ftp://igs.org/pub/station/general/igs08_1708.atx
or
ftp://igs.org/pub/station/general/igs08.atx

With best regards,
Ralf Schmid and Robert Khachikyan
on behalf of the IGS Antenna Working Group