Guess:[4, 39.2, 46, 3.7]
Fit:[ 4.45129247 23.30003801 28.71576191 3.35041973]

InflPointLoc:283
LinVoltageSpace[InflPointLoc]:8.38 V
AzoozUfl:-19.94 V
AzoozUfl+Shift(20.00 V):1.23 V

Guess:[6.3, -34.5, 21.3, 0.02]
Fit:[ 5.82341775 -25.4745091 19.98175644]