Group.7z → [ Real ]

Instead of "Extracting All," use the "Open Archive" feature in 7-Zip to look at the list of files inside.

If you need a technical report on the file's metadata, you can use the to generate one: Open your terminal or command prompt. Run: 7z l -slt Group.7z > report.txt This will create a report.txt containing: Method: The compression algorithm used (e.g., LZMA2). Group.7z

Can help you trace when the data was originally compiled. Instead of "Extracting All," use the "Open Archive"