Normalized $\Sigma_{\text{EEC}}$ as a function of $\langle p_{\rm T}^{\textrm{ch jet}} \rangle R_L$. ln$\langle p_{\rm T}^{\textrm{ch jet}} \rangle$ in the y-axis represents ln$(\langle p_{\rm T}^{\textrm{ch jet}} \rangle/({\rm GeV}/c))$ as explained in footnote 2. The gray line corresponds to the maximum location of the distribution and the gray band corresponds to a $\pm$0.17 GeV/$c$ uncertainty along the x-axis. The orange curves show pQCD calculations, which are normalized to data such that the integral inside $R_L$ range of [12 GeV/$c$/$\langle p_{\rm T}^{\textrm{ch jet}} \rangle$, 0.4] are the same. The purple curve represents a linear functional form that is fit to data in the $R_L$ range of [0.01, 0.7 GeV/$c$/$\langle p_{\rm T}^{\textrm{ch jet}} \rangle$]. Bottom: Ratios of the pQCD calculation and linear fit to data. As the fitting range for the linear curve is mostly accessible by the data in 20$-$40 GeV/$c$, the ratio of linear fit to data is only shown for 20$-$40 GeV/$c$. As the normalization range for the orange pQCD curve is mostly accessible by the data in 60$-$80 GeV/$c$, the ratio of pQCD to data is only shown for 60$-$80 GeV/$c$.