grid: /T (months since 1960-01-01) ordered (Dec 1850 - Feb 1851) to (Sep-Nov 1989) by 3.0 N= 556 pts :grid
grid: /X (degree_east) periodic (0) to (5W) by 5.0 N= 72 pts :grid
grid: /Y (degree_north) ordered (62S) to (86N) by 4.0 N= 38 pts :grid
Eischeid, J.K., H.F. Diaz, R.S, Bradley, and P.D. Jones. 1991. A comprehensive precipitation data set for global land areas. DOE/ER-69017T-H1, TR051, United States Department of Energy, Carbon Dioxide Research Program, Washington, D.C.