Representative com estimate for no-PDF (yellow) study; author preference unknowable. Internal median pick (study absent from Dahl 2011 DEDD) - UNVERIFIED by Dahl.
Huntington, H. G., and E. Soffer (1982): "Demand for Energy in the Commercial Sector." Report to Electric Power Research Institute (Final report) 2330/1982, Data Resources, Inc., Lexington, Massachusetts