plot(X1,Y1,S1,X2,Y2,S2,X3,Y3,S3,...) combines the plots defined by the (X,Y,S) triples, where the X's and Y's are vectors or matrices and the S's are strings. In this way it is possible to plot two or more signals with different time vector.
if the evolution of power is linear it will also be possible to interpolate the existing points to have the power at exact same timestamps. This way it is then easy to compare the two signals and do basic mathematical operations between them.
