***** Heat map color range for RMSF *****
  - blue and red represent low and high relative flexiblity, respectively.
  - bluest = 0 percentile RMSF
  - redest >= 95 percentile RMSF
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 Minimum RMSF (bluest) = 1.701737 nm
 95% RMSF (redest) = 6.185109 nm
 Maximum RMSF = 10.153461 nm
