Online TutorialsIf you are having trouble with the NAPP extraction or online analysis system, please see our brief tutorials for an introduction to our website:
Questions and AnswersFor specific questions about the data or website, please search for an answer on our user forum. You can also ask a question there, which one of our staff members or a fellow user will answer.
User Feedback / ErrorsWe also welcome suggestions and feedback about errors, inconsistencies, or ambiguities in the data and documentation. If you discover a significant error, we will happily send you a complimentary NAPP mug. Please send feedback to email@example.com