What does status Indexed '-' mean in Google Webmaster Tools?

I am quite new to Google Webmaster Tools (SEO in general). I recently uploaded an XML sitemap to Google via Google Webmaster Tools. Now I see the foll

I am quite new to Google Webmaster Tools (SEO in general). I recently uploaded an XML sitemap to Google via Google Webmaster Tools. Now I see the following. Not sure what this status means? Has it been crawled? please help me

or:I am quite new to Google Webmaster Tools (SEO in general). I recently uploaded an XML sitemap to Google via Google Webmaster Tools. Now I see the following. Not sure what this status means? Has it been crawled? please help me

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