seoClarity has published a new click-through ranking study analyzing desktop and mobile search. The study finds that the click-through rate drops significantly for content that doesn't rank in the No. 1 position in mobile query results. A graph in the study shows position No. 1 with a 27.7% CTR and position No. 2 with a 9.2% CTR. The study analyzed more than 2 billion impressions from Google Webmaster Tools data during 90 days, from June through August.