<HTML> <HEAD><TITLE>Moscow Neutron Monitor Data Base</TITLE></HEAD> <BODY BACKGROUND="red"> <h2 align=center>Data base of Moscow Neutron Monitor</h2> Database contents of Moscow neutron monitor data starting from 1958: Hourly data up from January 1958 (IGY-monitor until September 1968, then 18NM, until 1994 24NM-Supermonitor). The interval of accumulation: hourly from 1958; besides, 5-minute data (from January 1989 - June 1991) and 1-minute since July 1994. Database updating goes in real time. An interactive access is possible to this database and FTP as well. <h3>Interactive access</h3> Data in this regime are available in graphical and in digital presentation as well. All graphical plots are given relative to February 1987. <h3>Access by FTP</h3> 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. <p> 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). <!-- Corrected data firstly are the same as original data, but they may be corrected in future e.g. for the snow effect, for the possible long time jumps, when the sweing is required, slow drift, and, at last, cleaning data for the occasional mistakes. The special programs are closed in the corresponding folders to look through data in the grafical regime. They should be replaced on your computer to be used. Thus, to look through 1-minute and hourly data the program Plot_DAT should be used, and for GLE data use Plot_GLE program. After the corresponding Folder is opened by command OPEN, the following sort should be done: all type ( *.w1u, *.w1p, *.w1c) - select and plot 1-minute data, all type (*.?0u, *.?0p, *.?0o, *.?0c) - select and plot hourly data. --> </BODY> </HTML>