Top by Keyword report presents the Top 100 search results for the researched keyword, the keyword's difficulty score and the update date.
Keyword Difficulty - a major keyword metric designed to help you figure out what it takes to get to the top spots in SERP for the desired keyword, namely to the positions 1 through 10. The KD is measured on a scale from 0 to 100%, where:
0-20 — low KD;
21- 40 — medium KD;
41-60 — hard KD;
61-100 — super hard.
To view the cached SERP, please click on Organic Search Results.