Table 2.2 The distribution of guiding modes (hours)
===================================================
   SI      IN      EC      GY      CT      FL Total
  WFP  19.667   1.854   2.199   2.883 112.843 139.446
  FOC   1.667   0.000   0.000   0.750   4.095   6.512
  FOS   4.972   0.000   0.000   1.540  49.118  55.630
  HRS  10.273   0.000   1.295   0.387  11.374  23.330
  FGS   0.000   0.000   0.000   0.000   0.044   0.044
Total  36.578   1.854   3.494   5.561 177.474 224.961
    %  16.260   0.824   1.553   2.472  78.891 100.000
-----------------------
SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage