Data Base of LARC Neutron Monitor
LARC Neutron Monitor (alrenative name Antarctic Laboratory for Cosmic Rays) is
situated in King George island - Antarctica
It is a joint project between the University of Chile,
the Institute for Interplanetary Space Physics of the National Research Council of Italy
and the Roma Tre University,
Altitude: 40 m
Rigidity (1965): 3.0 GV
Standard atmoshperic pressure: 980.0 mb
Barometric coefficient (2004): -0.74%/mb
See Source and
Conditions for Data use
Prof. Enrique G. CORDARO
Laboratorio Radiación Cósmica - Dep. Física - FCFM - UChile
Av. Blanco Encalada 2008
P.O. Box 487-3 Santiago - Chile
Tel: 56-2-67-84-383, 56-2-55-72-295
Fax: 56-2-69-67-359, 56-2-55-72-295
E-mail Prof. Enrique G. Cordaro
E-mail Chief of Engineering Enrique Olivares Canouet
Database contents of LARC neutron monitor data starting
from January 1991 (6NM-Supermonitor). The interval of accumulation:
hourly and and 1-minute since January 1991.
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).