Table 2.2 The distribution of guiding modes (hours)
===================================================
   SI      IN      EC      GY      CT      FL Total
  WFP  14.133   2.021   3.240   0.000 130.335 149.729
  FOC   0.250   0.000   0.000   0.000  11.148  11.398
  FOS   2.534   0.000   0.450   0.000  59.646  62.630
  HRS  19.526   0.000   1.247   0.000  32.854  53.627
  FGS   0.000   0.000   0.001   0.000   0.087   0.088
Total  36.443   2.021   4.938   0.000 234.071 277.472
    %  13.134   0.728   1.780   0.000  84.358 100.000
-----------------------
SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage

Note:

Since the engineering telemetry is missing frequently because of the
failure of tape recorder 2, correct determination of the status of GS
Acquisitions is sometimes impossible.  Therefore, the above statistics
might be inaccurate.