The source – searchenginejournal.com
A recent research by Patrick Stokes found that the Google Search Console, on average, hides keywords for 46.08% of clicks.
The research looked at 146,741 sites a month that received more than 9 billion clicks. Its results show that Google hides a lot of data behind the keywords with "long tail". Many sites do not have half the data, and many sites have most of the data.
Among the reasons why query data is hidden, Google cites privacy and the fact that queries are made a small number of times.
The research also found more hidden data in sites with extremely high and extremely low traffic.