Simplified proportion reads computation

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.90%. Comparing base (8fe2d54) to head (12f9703). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #75 +/- ## ========================================== - Coverage 93.53% 92.90% -0.64% ========================================== Files 16 16 Lines 2306 2268 -38 ========================================== - Hits 2157 2107 -50 - Misses 149 161 +12 ```

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