Depending on the keyword and the title/description of each result, those numbers entirely possible. I've seen exponential traffic differences between 1st and 3r

Depending on the keyword and the title/description of each result, those numbers entirely possible. I've seen exponential traffic differences between 1st and 3rd results for a few keywords, so I'd have to guess that the 2nd result would behave similarly. You also have to consider the searches that result in no clicks or a modification of terms. It would be very interesting to see actual click through rates for each spot in a few representative sample search results.