FTS Report on DOY 284

I.  The following are clock offsets, in microseconds between the clocks
at each DSN complex and each complex relative to UTC(NIST).  The offset
is a mean of readings using several GPS space vehicles in common view.


                SPC10     SPC40     SPC60     SPC40     SPC60
                MINUS     MINUS     MINUS     MINUS     MINUS
 MJD   DOY      NIST      NIST      NIST      SPC10     SPC10

54739  274      0.904$*  -0.318^    0.781    -1.222&   -0.123%
54740  275      0.552    -0.317^    0.771    -0.869&   -0.103
54741  276     -0.159    -0.313^    0.770    -0.154&    0.941
54742  277     -0.173    -0.309^    0.792#   -0.135&    0.965%#
54743  278     -0.192    -0.300^    0.790    -0.108&    0.985
54744  279     -0.212    -0.286^    0.788    -0.074&    1.004
54745  280     -0.231    -0.276^    0.784    -0.045&    1.010
54746  281     -0.242    -0.266^    0.783    -0.024&    1.035
54747  282     -0.267    -0.258^    0.776     0.009&    1.040
54748  283     -0.283    -0.254^    0.774     0.029&    1.059
54749  284     -0.300*   -0.245*    0.771*    0.059*    1.077*
54750  285     -0.318*   -0.237*    0.768*    0.086*    1.094*

II.  Frequency Offsets from linear least-squares fits on time-offsets
over the period (54739 to 54748):

|------------------------------|-----------|-------------|-----------|
|                              | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|        MEASUREMENT           |   (E-13)  | (+/- E-13)  |  (nsec.)  |
|------------------------------|-----------|-------------|-----------|
|  SPC10 RELATIVE TO UTC(NIST) |  -2.076   |    0.043    |   2.408   |
|  SPC40 RELATIVE TO UTC(NIST) |   0.936   |    0.064    |   4.972   |
|  SPC60 RELATIVE TO UTC(NIST) |  -0.363   |    0.036    |   1.624   |
|  SPC40 RELATIVE TO SPC10     |   3.154   |    0.075    |   4.199   |
|  SPC60 RELATIVE TO SPC10     |   1.875   |    0.102    |    5.68   |
|------------------------------|-----------|-------------|-----------|

III.  Comments:
* Values derived from linear least squares extrapolation or interpolation
& Direct subtraction between columns (SPC40-NIST) and (SPC10-NIST).
^ Number obtained from the SPC40 GPS true time, with an offset.
% There were not enough common-view SVs between SPC 60 and SPC 10, direct subtraction was used.
! SPC 60 receiver failed for 39 hours (MJD 54736/2026 UTC to MJD 54738/1134 UTC). It came back by itself.
$ SPC 10 had a scheduled power outage for maintenance. TTR 5 receiver lost all data accumulated from before outage. 
$ TA computer down, log file for MJD 54740 (DOY 275) was lost. 
# SPC60 receiver A begins to fail since about MJD 54732. Switched to using receiver B since MJD 54742.