This data set was distributed by NSIDC until October 2003, when it was withdrawn from distribution because it duplicated, what was then, the NOAA National Climatic Data Center (NCDC) data set DSI-3720. DSI-3720 has been merged into a larger precipitation data set, Global Historical Climatology Network, 1753-1990 (NDP-041). This merged data set is revised and updated beyond what was originally distributed by NSIDC. The DSI-3720 collection consisted of monthly precipitation measurements from 622 stations located in the Former Soviet Union. Documentation for the original collection can be found at NCDC USSR Monthly Precipitation for 622 Stations 1891-1999. Another closely related data set that may be of use is the Russian Summary of Day, 1881-1989.