Open Record Step 13: Say Where It Came From

Write the provenance and limits section of your project. For each source: publisher, exact URL, fetch date, coverage, license and a link to it. Then the limits: who the data excludes, what you dropped and how much, which numbers are estimates rather than counts. Then write the one sentence: this shows X, among the people this dataset covers, which excludes Y, over the period Z. If you cannot complete that sentence, go back and find out what is missing before publishing anything.