1Study on tectonic stress field in Yingjiang area based on multi-focal mechanism solution sequenceFeng Bing, Zhu Liangyu, Ji Yao, Li Yang, Li WeiArticl97-1052Evaluation of the results of automatic earthquake location systems of Anhui networkYu Jianfang, Yuan Yong, Xia Shian, Han ChengchengArticl112-1213Analysis of variation characteristics of radon observation data in Bengbu stationShi Xiaolei, Wang Jun, Li Lianghui, Zhang Weifeng, Xiao Pan, Pan Jie, Du MoranArticl130-134