Fix default phase diagram value

[munrojm]

No description provided.

[codecov-commenter]

Codecov Report

Merging #309 (7eade45) into main (de02ad9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #309   +/-   ##
=======================================
  Coverage   90.64%   90.64%           
=======================================
  Files          47       47           
  Lines        2438     2438           
=======================================
  Hits         2210     2210           
  Misses        228      228           

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