13. A method for acquiring data for training a predictive emission monitoring system that generates output values indicative of output emissions from a source of emissions, the predictive emission monitoring system being trained using a training data set, the training data set including a plurality of data sets comprising at least one of values indicative of control signals from corresponding controls and parameter sensors measuring selected operating parameters of the source of emissions correlated with actual output emission values corresponding to said at least one of values indicative of control signals from corresponding controls and parameter sensors measuring selected operating parameters of the source of emissions and providing corresponding sensor output signals, the method comprising the steps of: