UNAM gridded monthly Version Released Feb 2006: Cressman analysis of monthly precipitation for Mexico and surroundings based upon CLICOM daily station data, GHCN Version 2 monthly station data, and GPCC monthly gridded data, from the Centro de Ciencias de la Atmósfera
Resolution: 0.5x0.5; Longitude: [140.75W,59.25W]; Latitude: [4.25N,40.75N]; Time: [Jan 1951,Dec 2000]; monthly