FTS Report on DOY 055

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

55241  045      0.708    -2.099    -0.239    -2.810    -0.949
55242  046      0.689    -2.138    -0.256    -2.829    -0.946
55243  047      0.668    -2.178    -0.277    -2.848    -0.945
55244  048      0.649    -2.215    -0.296    -2.866    -0.944
55245  049      0.628    -2.252#   -0.317    -2.881#   -0.945
55246  050      0.607    -2.261    -0.333    -2.870    -0.940
55247  051      0.588    -2.259    -0.350    -2.849    -0.939
55248  052      0.571    -2.253    -0.368    -2.826    -0.939
55249  053      0.552    -2.249    -0.386    -2.802    -0.938
55250  054      0.534    -2.242    -0.403    -2.777    -0.937
55251  055      0.512*   -2.238*   -0.423*   -2.755*   -0.935*
55252  056      0.493*   -2.233*   -0.442*   -2.732*   -0.934*
Values derived from linear least squares extrapolation or interpolation are indicated by (*) next to the time offset. 

II.  Frequency Offsets from linear least-squares fits on time-offsets over the period from 55241 to 55250
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |   -2.258  |    0.021    |   1.595   |
|   SPC40 RELATIVE TO UTC(NIST)   |    0.580  |    0.017    |   1.343   |
|   SPC60 RELATIVE TO UTC(NIST)   |   -2.121  |    0.022    |   1.694   |
|   SPC40 RELATIVE TO SPC10       |    2.682  |    0.016    |   1.243   |
|   SPC60 RELATIVE TO SPC10       |    0.147  |    0.013    |   0.978   |
 -----------------------------------------------------------------------

III.
Comments: * Values derived from linear least squares extrapolation or interpolation.
# SPC 40 HM2 frequency shifted by about 4*E-13 seconds late on DOY 049 (MJD 55245). Reason for the shift is still under investigation. 

NOTES: All DSN data are from the new multichannel receivers.
SPC 10 and SPC 60 offsets are commonviewed with NIST and with each other.
SPC 40 offsets are all-in-viewed with NIST and with SPC 10. 

FTS Contacts: Connie Dang (626)305-6194 :: Linh La (626)305-6184



                                  Page 1