Table 2.2 The distribution of guiding modes (hours)
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   SI      IN      EC      GY      CT      FL Total
  WFP  21.206   0.239   1.420   4.928 127.932 155.725
  FOC   0.000   0.000   0.000   0.000  15.176  15.176
  FOS   6.546   0.000   0.006   0.336  26.272  33.161
  HRS   7.583   0.000   0.000   0.149  13.806  21.537
  FGS   0.000   0.000   0.000   0.000   0.005   0.005
Total  35.335   0.239   1.426   5.413 183.190 225.604
    %  15.662   0.106   0.632   2.399  81.200 100.000
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SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage