Guess:[4, 39.2, 46, 3.7]
Fit:[ 3.12846856 29.90044466 9.00101376 1.95754822]

InflPointLoc:186
LinVoltageSpace[InflPointLoc]:-21.38 V
AzoozUfl:26.00 V
AzoozUfl+Shift(20.00 V):1.65 V

Guess:[6.3, -34.5, 21.3, 0.02]
Fit:[ 1.61175512e+00 -2.26023648e+08 8.68980640e+07]