/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.  12.  24.  36.  48.  72.  96.]
[-176.7 -175.4 -173.8 -171.8 -169.7 -165.5 -161.7]

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