Table 2.2 The distribution of guiding modes (hours)
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   SI      IN      EC      GY      CT      FL Total
  WFP  18.150   3.665   4.621   2.722 120.364 149.522
  FOC   1.667   0.000   0.000   0.000  12.495  14.162
  FOS   2.701   0.000   0.961   0.000  62.241  65.903
  HRS   2.713   0.000   0.000   0.067   6.395   9.175
  FGS   0.000   0.000   0.000   0.000   0.059   0.059
Total  25.230   3.665   5.582   2.789 201.555 238.821
    %  10.564   1.535   2.337   1.168  84.396 100.000
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SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage