FTS Report on DOY 287

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

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    -0.252^    0.770     0.048&    1.066
54750  285     -0.307    -0.252^    0.763     0.054&    1.066
54751  286     -0.321    -0.250^    0.784     0.071&    1.105%
54752  287     -0.345*   -0.234*    0.768*    0.111*    1.110*
54753  288     -0.361*   -0.227*    0.765*    0.134*    1.124*

II.  Frequency Offsets from linear least-squares fits on time-offsets
over the period (54742 to 54751):

|------------------------------|-----------|-------------|-----------|
|                              | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|        MEASUREMENT           |   (E-13)  | (+/- E-13)  |  (nsec.)  |
|------------------------------|-----------|-------------|-----------|
|  SPC10 RELATIVE TO UTC(NIST) |  -1.939   |    0.061    |   4.784   |
|  SPC40 RELATIVE TO UTC(NIST) |   0.778   |    0.095    |   7.436   |
|  SPC60 RELATIVE TO UTC(NIST) |  -0.271   |    0.084    |   6.538   |
|  SPC40 RELATIVE TO SPC10     |   2.717   |    0.149    |  11.685   |
|  SPC60 RELATIVE TO SPC10     |   1.616   |    0.102    |   7.979   |
|------------------------------|-----------|-------------|-----------|

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.
$ 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.