/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.]
[-120.4 -121.7 -123.9 -126.6 -129.4 -132.1 -134.9 -140.  -145.5]

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