The coded rows are exactly the national annual-average SR/LR elasticities per customer class (last row of Table 4), which the authors headline as their findings in the Results and Conclusion; the paper's headline all-class aggregate (-0.13 SR / -0.36 LR) is the demand-weighted average of these six, so all six sector rows count as preferred. || "The results reported in the last row of Table 4 indicate that the national, annual average short-run price elasticities of demand are most elastic in the industrial class and least so in the commercial class. In the long run, the residential and industrial classes exhibit similar price responsiveness, with the commercial class being 25 percent less elastic." (p. 19, printed)
Paul, A., Myers, E., & Palmer, K. (2009): 'A partial adjustment model of U.S. electricity demand by region, season, and sector.' RFF Discussion Paper 08-50.