Table 2.2 The distribution of guiding modes (hours)
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   SI      IN      EC      GY      CT      FL Total
  WFP  23.841   0.000  11.597   2.128 155.991 193.557
  FOC   0.833   0.000   0.000   0.000   9.648  10.481
  FOS   2.569   0.000   0.000   0.000  51.193  53.762
  HRS   9.811   0.000   0.217   0.364  32.732  43.124
  FGS   0.000   0.000   0.000   0.000   0.100   0.100
Total  37.055   0.000  11.814   2.492 249.665 301.025
    %  12.310   0.000   3.924   0.828  82.938 100.000
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SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage