Looking at the reports generated by Google Search Console (GSC)
I see that many of my pages are registering "impressions".
The GSL help pages explain Impressions, etc, in more detail.
A link URL records an impression when it appears in a search result for a user. Whether or not the link must actually be scrolled
into view or
otherwise visible depends on the type of search element that contains the link.
At first I thought that Impressions were not very useful and only showed that a user had clicked-through your page.
In fact they are very useful and show that a users search resulted in Google displaying it (potetially, as it could be well
down the SERP) and that your page actually contained information that the user was looking for.
Judging by what I see of most users they don't really understand what they are seeing in a SERP (Search Engine Results
Page), so an impression is a good indication that the page should be exanded or improved and eventually result in a "click".
Top
What is search result position?
Again, the GSC help explains --- I have not included the diagram (you can visit the Google site using the link below)
The Google Search results page is composed of many search result elements. Search result elements include blue link sections,
carousels, featured snippets, Knowledge Graph cards, and many other types of result features. A single search result element can
include text, interactive features, and one or more links.
Most of search result elements have a numeric position value describing their position on the page.The following desktop diagram
shows a search results
page with four blue link sections (1, 3, 4, 5), an AMP carousel (2), and a Knowledge Panel card (6). Position for each is
calculated from top to bottom
on the primary side of the page, then top to bottom on the secondary side of the page (in right-to-left languages, the right
side is the primary side),
as shown here: