/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.  120.]
[ 72.6  73.8  74.8  75.3  75.3  73.9  69.9  66.3]

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