Quality-controlled geomagnetic hourly mean values datasets of Sheshan observatory from 1933 to 2019

The Sheshan geomagnetic observatory (IAGA code SSH) is one of the earliest geomagnetic observatories in China and one of the geomagnetic observatories with the longest history in the world. The datasets include the absolute hourly mean values files of declination components D, horizontal components H and vertical components Z at SSH for 1933-2019, and the metadata files about the datasets. The datasets can be applied to the study of geomagnetic daily variation, construction of geomagnetic field model and secular variation of geomagnetic field.