m3 (col 3, Table 2, effect -0.761) is the paper's baseline model used for all downstream efficiency/conservation calculations || 'This paper regards the energy inefficiency score, which is obtained from model m3 (column 3, Table 2), as a baseline result to calculate the electricity conservation potential.' (p.7)
Lin, B., & Zhu, J. (2020): "Chinese electricity demand and electricity consumption efficiency: Do the structural changes matter?" Applied Energy, 262, 114505.