Beijing super neutron monitor(18-NM-64) is situated in the suburbs of Beijing(40.080 N,116.260 E) with altitude 47 meters. The local vertical geomagnetic cutoff rigidity is about 9.6 GV. The neutron monitor in Beijing is one of the most stable and reliable stations of the World Neutron Monitor Network. The Beijing cosmic ray station belongs to the the National Space Science Center, CAS.
Cosmic ray measurements in Beijing started in 1984 with a standard 18-NM-64 proportional gas counters to detect neutron flux. In 1991, the completely new data collecting system was implemented to collect 5-minute data. In 2008, the new fully automatic data collecting and pre-processing system was installed that uses, in particular, precise GPS timing and remote access control. The database contains 5-minute resolution data since 1991, and hourly data since 1984. The 5-minute resolution data and hourly data are provided in real time.