Statistical analysis of the Si I 6560.58 Å line observed by CHASE Jie Hong, Ye Qiu, Qi Hao, Zhi Xu, Chuan Li, Mingde Ding and Cheng Fang A&A, 668 (2022) A9 Published online: 28 November 2022 DOI: 10.1051/0004-6361/202244427