Data Documentation – Summary information about the contents of the database.
Data Policy and Use – What you need to know about fair use and data management before accessing the database.
Variables and Calculations – Variables, calculations, and quality assessment information.
Quick Start Guide – A ‘how-to’ guide for understanding and interacting with the database. Read this first!
Intermediate Data Use Guide – A combination of details and examples. Read this second.
Advanced Data User Guide – A working document not recommended for the faint of heart. Read this if brave.