Keywords found in the Anchor tags: Keyword - Times Found.
These are text links on your web page (include the 'alt' text from images in the links). These become more important by many search engines (for best results try to name them after your primary keywords).
Keywords found in the IMG Alt tags: Keyword - Times Found.
This is text found in the 'alt' tag from the images. For web pages with a lot of images those tags are important (for best results try to name them after your primary keywords).
Keywords found on page: Keyword - Times Found - Keyword Density.
These are keywords found on the web page. These are the keywords where the web page is target for (probably contain the most searches for this web page one of these keywords).
URLs found in the page: URL - Times Found
Found 1 urls from where 1 unique.