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.

Latitude: -34.42S
Longitude: 19.23E
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
School of Physics North-West University
Potchefstroom Campus
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 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 pressure (U). Hourly data are presented uncorrected (U) and corrected for atmospheric pressure (P). Pressure corrected hourly data are kept as original (O) and corrected (C).