One is created every time you run a virus scan.
Here are a few, small AVG files you can delete :-
All the files with an extension of AVG from C:\Program Files\Grisoft\AVG6\Log and all the files from C:\Program Files\Grisoft\AVG6\Update.
Surface Pro (2017) vs Surface Pro 4
Where HTML5 is headed next
MacBook Pro v Surface Pro 5
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