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Hi Scott! Sam from Moz's Help Team here! The number itself doesn’t mean anything specific. The point of the number is to see what rows in the csv are affected by the same issue. So if the issue group is 9, each row that has 9 in that column is related  to that issue type. If you are wanting more in depth information re. the crawl issues I would recommend setting up a campaign and looking at the Full Site Crawl which will provide more detail re. issues and suggestions for resolving  them: https://analytics.moz.com/pro/manage-campaigns The On Demand Crawl provides more of a general overview. You can find a guide for the Site Crawl and flagged issues here: https://moz.com/help/moz-pro/site-crawl/overview - but if you need any further help, please do pop a message over to help@moz.com and  we'll be happy to take a look at your results and lend a hand:).