<HTML> <HEAD><TITLE>DEEP RIVER Neutron Monitor Data Base</TITLE></HEAD> <BODY BACKGROUND="red"> <h2 align=center>Data Base of DEEP RIVER Neutron Monitor</h2> DEEP RIVER Neutron Monitor was situated in CHALK RIVER, CANADA<BR> It was a project of ATOMIC ENERGY OF CANDADA LIMITED<BR><BR> Latitude: 46.10N<BR> Longitude: -77.50W<BR> Altitude: 145 m<BR> Rigidity (1965): 1.14 GV<BR> Standard atmoshperic pressure: 1015 mb<BR> Barometric coefficient (1964): -0.71 %/mb<BR> SF=100 (The mean count is around 720000/hour or 12000/min,)<BR><BR> Address:<BR> Dr. ????? ?????<BR> ATOMIC ENERGY OF CANDADA LIMITED<BR> adress: ?????????<BR> Tel: ???????<BR> Fax: ???????<BR> E-mail <a href="mailto:?????@???????">Dr. ???.???</a><BR> Database contents of DEEP RIVER neutron monitor data worked from 1957 (12IGY, from 1963 18IGY, from 1964 18nm64). The interval of accumulation: hourly from 1957; besides, 1-minute data from 1988. 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>