Additionally, the P-values (not listed) for each of the coefficients
represent the probability of each of the predictor variables being
insignificant for the model result. For all the coefficients in the four
models, the P-values are in the range of 1*1030 to 1*10100, i.e. it is
certain that the variables are important for the predicted maximum
thermal efficiency, as should be expected. One exception is the DTpp
variable in the high temperature simple ORC model which has a Psignificance
of 3*105.