Option to remove SI Scaling
Setting SI scaling to False stops PyQTGraph from adding an arbitrary "power of 10" scale to the Y axis.
Scaling is caused by the auto-prefixing feature, which can change the SI prefix on units, but will also change scaling if there are no units assigned to the axis.
plot.getAxis('left').enableAutoSIPrefix(False)
AutoSIPrefix is default to True
Edited by Jameson Rollins