Historical K index data collection of Soviet magnetic observatories, 1957-199...
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The presented collection includes the results of the K index determination at 41 geomagnetic observatories of the former USSR for the period from July 1957 to early 1990s. This...
本数据集收录了1957年7月至20世纪90年代初，前苏联境内41个地磁观测台站的K指数（K index）测定结果。该
