Add data from footnote in exercise 1.27

[burenkov-anton]

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[codecov-commenter]

Codecov Report

Merging #786 (1121073) into master (4931bd9) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #786   +/-   ##
=========================================
  Coverage     83.80%   83.80%           
  Complexity      197      197           
=========================================
  Files            59       59           
  Lines           821      821           
=========================================
  Hits            688      688           
  Misses          133      133           

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