Poverty Mapping ← Knowledge Base On the "Prevalence of Child Malnutrition" data set using the 1/4 degree raster file called "UW", the values for the visualized raster data ranges from near 0 to over 500. But this does not make sense, because according to the documentation and the readme file, the "UW" file is supposed to represent the percent of children under age 5 who are malnutritioned. By that definition the values should only range from 0-100.