Guess:[4, 39.2, 46, 3.7]
Fit:[ 3.38740421 20.96233661 11.46722851 -0.26257193]

InflPointLoc:605
LinVoltageSpace[InflPointLoc]:-9.91 V
AzoozUfl:-96.59 V
DataIndex(20.00 V):-45.44 V

Guess:[10.5, -63, 102, 0.02]
Fit:[ 10.54688489 -62.75862851 102.3230013 ]
$I_{sat}=$10.55

Guess:[10.5, -63, 102, 0.02]
Fit:[ 1.66165057e+00 -6.33053045e+01 1.51195622e+01 3.00000000e-02]
$I_{sat}=$1.66