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Tell us what you found, and we will check it against the source. Every correction is worth having.
Good reasons to write
- A number looks wrong. Tell us the page and the figure, and where you saw a different one.
- You produce data we use, or could. Licences, credits and new releases are all welcome.
- Press, teaching and research. Questions about how a figure was worked out, or about using a picture.
- Anything else that would make the site clearer.
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We read every message, though we cannot promise to answer each one.