simplify data properties of track

[ghost]

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[codecov-commenter]

Codecov Report

Merging #16 (e6e9d14) into main (c344db8) will increase coverage by 0.01%.
The diff coverage is 90.62%.

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   91.14%   91.15%   +0.01%     
==========================================
  Files          19       19              
  Lines        1739     1741       +2     
==========================================
+ Hits         1585     1587       +2     
  Misses        154      154              

Impacted Files	Coverage Δ
stormevents/nhc/track.py	90.50% <88.46%> (ø)
tests/test_nhc.py	100.00% <100.00%> (ø)

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