Data Base of HERMANUS Neutron Monitor
HERMANUS Neutron Monitor (alrenative name HRMS) is
situated in HERMANUS, REP. OF SOUTH AFRICA
It is a project of the of the North-West University of South Africa.
Altitude: 26 m
Rigidity (1965): 4.58 GV
Standard atmoshperic pressure: 1015.0 mb
Barometric coefficient (2004): -0.73%/mb
SF=100; Counts rate 7600 counts/min
See Source and
Conditions for Data use
Prof. Pieter H. Stoker
UNIT OF SPACE PHYSICS
School of Physics North-West University
Private Bag X6001
2520 Republic of South Africa
Tel: +27 18-299-2422
Fax: +27 18-299-2421
E-mail Prof. Pieter H. Stoker
Database contents of HERMANUS neutron monitor data starting from June 1957.
Station currently consists of 12NM64 (IGY until 1964) neutron monitor.
The interval of accumulation:
hourly from June 1957 and and 1-minute since December 1993.
An interactive access is possible to this database and FTP
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).