The place can I discover correct knowledge displaying the common quantity that individuals paid in miner transaction charges per transaction per day?

I discovered a chart titled Charges Per Transaction (USD) on Blockchain.com. I downloaded the dataset (csv) and calculated the common each day payment per transaction in 2021 to be $10.22.

However that does not make sense. I often spend 1-3 s/B. If the amount is abnormally excessive, then possibly I spend at most 20 s/B. I do not assume I’ve ever spent greater than $1 for a bitcoin transaction in 2021, however the knowledge on blockchain.com means that the day with the bottom common payment per transaction in all of 2021 was $1.51. How is that this attainable?

Why is the information reported by blockchain.com for common transaction payment per transaction so excessive? The place can I discover correct knowledge that exhibits the common transaction payment per transaction?