## USDA National Nutrient Database for Standard Reference
Release 20

### SR20 Data Files - ASCII This directory contains the full dataset. The data files are ASCII delimited and uncompressed. Fields are separated by the caret (^) symbol, and character fields are enclosed by tilde (~) marks. The files are: Food Description (File Name = FOOD_DES.txt) Food Groups (File Name = FD_GROUP.txt) Nutrient Data (File Name = NUT_DATA.txt) Nutrient Definitions (File Name = NUTR_DEF.txt) Weight (File Name = WEIGHT.txt) Derivation Code (File Name - DERIV_CD.txt) Source Code (File Name = SRC_CD.txt) Footnotes (File Name = FOOTNOTE.txt) Sources of Data (File Name = DATA_SRC.txt) - This file is also available as a PDF file. Data Source Link (File Name = DATSRCLN.txt) Documentation is available as a PDF (SR20_doc.pdf) file. It explains the relationships among the data files and provides the format for each. These files are in the directory [CD-ROM Drive]:\SR20DATA\ASCII

SR20 Table of Contents