Erratum: Analyses on the nonequilibrium transport processes in a free-burning argon arc plasma under different operating conditions (2022 Plasma Sources Sci. Technol.31 015015). (1st April 2022) - Fang, Chuan; Chen, Jian; Li, Jing; Zhang, Zi-Ming; Guo, Heng; Li, Zhi-Hui; Zeng, Shi; Li, He-Ping