Table 2.2 The distribution of guiding modes (hours)
===================================================
   SI      IN      EC      GY      CT      FL Total
  WFP  17.167   1.072  17.304   1.778 122.450 159.771
  FOC   1.667   0.000   0.167   0.000   4.262   6.096
  FOS   3.239   0.000   4.369   0.000  17.992  25.600
  HRS  15.299   0.250   4.468   1.336  19.822  41.176
  FGS   0.000   0.000   0.001   0.000   0.075   0.076
Total  37.371   1.322  26.310   3.114 164.601 232.718
    %  16.059   0.568  11.305   1.338  70.730 100.000
-----------------------
SI = Science Instrument
IN = Internal
EC = Earth Calibration
GY = Gyro
CT = Coarse Track
FL = Fine Lock
%  = Percentage