GlPop90.dbf: Gridded global population distributions for 1990 with 1X1 latitude/longitude resolution Fields: - UNCode2 United Nations standard ISO Country Codes - Country Country/region name - Grid Grid code number - Pop1990 Total population contained in each grid cell for each country Total population; 5,291,059,610 Number of Records: 12,857 Number of Cells: 11,783 Total Number of Countries: 209 Definition of Grid Code Number Grid Code Number = (j*1000) + i j: row number starting at 1 for 90°S to 89°S latitude, to 180 for 89°N to 90°N latitude i: column number starting at 1 for 180°W to 179°W longitude, to 360 for 179°E to 180°E longitude The latitude and longitude of the centre of the grid cell is given by latitude = (j-91) + 0.5 longitude = (i-181) + 0.5