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Data quality is an important guarantee for scientific research. The Geomagnetic Network of China (GNC) controls data quality for all observatories under the jurisdiction of China Earthquake Administration. This paper presents the quality control content and methods; quality evaluation and feedback procedures; and the process for publishing data sets via the GNC website. Technical challenges and proposed quality assurance procedures for future GNC data sets are described.
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Zhang et al. (2016) studied this question.
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