Fixed bug reading in single season's events

[specktakel]

No description provided.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (61fd7b6) 55.28% compared to head (2707db6) 55.29%.
Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #47      +/-   ##
==========================================
+ Coverage   55.28%   55.29%   +0.01%     
==========================================
  Files          24       24              
  Lines        4379     4380       +1     
==========================================
+ Hits         2421     2422       +1     
  Misses       1958     1958              

Files	Coverage Δ
icecube_tools/utils/data.py	71.72% <90.90%> (+0.04%)	⬆️

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