Not surprisingly the top left area of the screen had the greatest impact which meant in turn that the results shown on the page decreased in "visibility" according to where they were in the list.
- Rank 1 - 100%
- Rank 2 - 100%
- Rank 3 - 100%
- Rank 4 - 85%
- Rank 5 - 60%
- Rank 6 - 50%
- Rank 7 - 50%
- Rank 8 - 30%
- Rank 9 - 30%
- Rank 10 - 20%
Appearing at number 10 on a search result effectively elliminates 80% of searchers - which means we have plenty of work to do to keep ourselves at the top of the search engine listings.