Guess:[4, 39.2, 46, 3.7]
Fit:[ 5.30929588 52.35002077 60.94042055 3.58785598]

InflPointLoc:317
LinVoltageSpace[InflPointLoc]:19.95 V
AzoozUfl:34.88 V
AzoozUfl+Shift(20.00 V):11.26 V

Guess:[6.3, -34.5, 21.3, 0.02]
Fit:[ 3.01339797e+06 -3.00130151e+01 1.81960894e+06]