In Situ Strain = 0.985 
Model data for rms calculation: [2.30533855 3.49607298 4.39536377 5.1754209 ] 
RMS error =  0.44364387072886907 

=====================================================================
In Situ Strain = 0.984 
Model data for rms calculation: [2.33733814 3.53231499 4.43345852 5.21399286] 
RMS error =  0.4446289640399706 

=====================================================================
In Situ Strain = 0.986618034 
Model data for rms calculation: [2.25354422 3.43756359 4.33359958 5.11280096] 
RMS error =  0.4482472284985845 

=====================================================================
In Situ Strain = 0.985 
Model data for rms calculation: [2.30533855 3.49607298 4.39536377 5.1754209 ] 
RMS error =  0.44364387072886907 

=====================================================================

The optimized in situ strain is 0.985