Conversion of

01tideList.txt
--------------
Adjust the list to the provided constituents of the ocean tidal atlas.
The file should also include the equillibrium tides.

icgemHeader.txt
---------------
Comments which are included in the generated .gfc files.

010groopsConvert.xml
--------------------
LoopPrograms
ncdump -h <file.nc>

GriddedDataConcatenate:
- Removes the dupliacte north/south pole value
- Removes possible duplicate values at 360 longitude

GriddedDataCalculate:
- NaN should be set to zero
- The output should be a grid file with two data columns (value)
  for cos/inphase and sin/quadrature with the water heights in [m]

GriddedData2PotentialCoefficients:
- The area element is used as weights in the least squares adjustment
- Single large tidal heights (e.g. at coast) can cause ringing effects
  and therefore used with zero weight (abs(data) > outlier).

GroupPrograms: equillibriumTide
- Generates equillibriumTides for the constituents
  in global/loopEquilibriumTides (OM1, OM2, SA, SSA)
  (overwrites possible existing model constituents)