Abstract. The only published description of the solar wind sector (SS) term used for the reference level in the post-event and real-time derivation of the Polar Cap (PC) indices, PCN (North) and PCS (South), in the version endorsed by the International Association for Geomagnetism and Aeronomy (IAGA) is found in the commented publication, Janzhura and Troshichev (2011): Identification of the IMF sector structure in near-real time by ground magnetic data, Annales Geophysicae, 29, 1491–1500. Actually, the publication has served as basis for the index endorsement by IAGA in 2013. However, neither the illustrations nor the results presented there have been derived by the specified near-real time method. Figs. 1, 6, 7, and 8 display values derived by post-event calculations based on daily medians smoothed over 7 days centred on the day of interest. Figs. 2, 3, and 4 display observed values smoothed over 7 days, while the remaining Fig. 5 displays averages over 4 months. In summary, there are strong disagreements between indications in the title, abstract, and statements in the text compared to the actual results and their illustrations.

中文翻译：

---

Janzhura和Troshichev（2011）关于利用地磁数据近乎实时地识别IMF部门结构的评论

摘要。在版本中，极地上限（PC）指数，PCN（北部）和PCS（南部）的事后和实时推导中，用于参考水平的太阳风能（SS）术语的唯一公开描述。在发表评论的出版物Janzhura和Troshichev（2011）中找到了国际地磁与航空学协会（IAGA）认可的文章：《通过地磁数据近乎实时地识别IMF部门结构》，《 Annales Geophysicae》，29，1491–1500年。实际上，该出版物已成为IAGA在2013年认可该指数的基础。但是，该图例或此处给出的结果均未通过指定的近实时方法得出。无花果 通过事件后计算得出的1、6、7和8显示值是基于以感兴趣日期为中心经过7天平滑的每日中位数得出的。无花果 2 3 图4和图4显示了在7天内平滑的观测值，而其余的图5则显示了4个月的平均值。总而言之，与实际结果及其插图相比，标题，摘要和文本中的说明之间存在强烈分歧。