If you want your data to be useful for your future self, your colleagues, or other researchers, you must describe it. Beyond what you planned, what you did, what happened, and what you think it means, describe your data in detail. The sooner you start, the more likely you will remember everything!
Other materials associated with your primary data set, including those listed below, should be digitized and included with your data. They should also at least be referenced in your data description, if not fully described:
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