The <Quality> field allows the author to provide information about the quality of the data or any quality assurance procedures followed in producing the data. Suggestions for information to include in the <Quality> field
  • Include indicators of data quality or quality flags.
  • Include recognized or potential problems with quality.
  • Established quality control mechanisms should be included.
  • Established quantitative quality measurements should be included.

<Quality>multiple lines of text</Quality>  

  • Multiple lines of text are allowed for the <Quality> field and may contain characters from the UTF-8 character set.
  • The <Quality> field is highly recommended and may not be repeated.

<Quality>The data set has been in extensive use for over 5 years by many researchers and has resulted in multiple publications.</Quality>  

<Quality>Orbit calculations using the JGM-3 gravity model have reduced the radial orbit error to 10-15 cm.</Quality>  

<Quality>This data has been in extensive use in weather forecasting and atmospheric chemistry research for many years, and has thus been subject to independent review by many scientific experts.</Quality>


This document should be cited as:
Directory Interchange Format (DIF) Writer's Guide, 2018.
Global Change Master Directory.
National Aeronautics and Space Administration.