You also need to understand how Google "counts". For example, if the site is #1 and shows with large sitelinks, and someone clicks on one of sitelinks, then the position will be recorded as the position of the sitelink, not as #1. So bottom-right sitelink will be recorded as #7.
Secondly, if you are #2, that is, there is a competitor as #1, followed by a row of 4 images, then your site shows next, it will be recorded as #6 as each image counts as a position.
Local search including google maps also show as position, so if you are listed first after the 7-pack, you will be 8th.
And as Lucy pointed out, definitely filter for "web" if you do not want to be impacted by image search - which in fact not just impacts your average position but also the CTR shown.