Only users who have an active subscriptions can download archives as Excel or PDF files. Once you purchase a subscription, you have unlimited access to the download feature of any Tweet Archivist archive, whether it is your own or a publicly available archive.
If you'd like to see a sample of how these files are rendered, check out the following downloads:
Note that these sample files contain only a small number of tweets, but archives can grow to 50,000 tweets.