Representative ind estimate for no-PDF (yellow) study; author preference unknowable. Internal median pick (study absent from Dahl 2011 DEDD) - UNVERIFIED by Dahl.
Hieronymus, W. H. (1976): "Long-Range Forecasting Properties of State-of-The-Art Models of Demand for Electric Energy." Final Report prepared for the Electric Power Research Institute, Palo Alto, CA; Charles River Associates, Inc., Cambridge, Massachusetts