Data base of Norilsk Neutron Monitor
Database contents of Norilsk neutron monitor data starting from 1971
(18NM64): up from January 1971-1981 and from 2000.
The interval of accumulation:
hourly from 1971; 1-minute since August 2000. Database updating
goes in real time. An interactive access is possible to this
database and FTP as well.
Interactive access Data in
this regime are available in graphical and in digital presentation
as well. All graphical plots are given relative to February 1987.
Access by FTP
One-minute data are in directory ftp_NM1, hourly data in
directory ftp_NM. Ground Level Enhancement (GLE) data are in the
GLE directory. One-type data are presented in their own Format:
hourly data in format C, 1-minute data in W format, and GLE data
in GLE format.
There are three types of 1-minute data: neutron
monitor data corrected for atmospheric pressure (C), atmospheric
pressure (P), and neutron monitor data uncorrected for atmospheric
Hourly data are presented uncorrected
(U) and corrected for atmospheric pressure (P).
Pressure corrected hourly data are kept as original (O)
and corrected (C).