/home/critechuser/cycloneSurge/Python/vtcalc.py:19: FutureWarning: comparison to `None` will result in an elementwise object comparison in the future.
  if lon == None :

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[   0.    9.   21.   33.   45.   57.   69.   93.  117.]
[-47.9 -49.  -50.2 -51.6 -53.1 -54.4 -55.8 -58.8 -61.5]

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