No, bitinfocharts shows the median tx fee of transactions through a day, not blocks. It's been over $13 for the last 7 days, hence over $13 for the last week.

No, bitinfocharts shows the median tx fee of transactions through a day, not blocks. It's been over $13 for the last 7 days, hence over $13 for the last week. Source for average (mean) txn size: https://charts.bitcoin.com/chart/transaction-size#b2k https://charts.bitcoin.com/chart/transaction-size#b2k which is a bit above 500 bytes. Bitcoinfees.earn.com shows the median, not mean, txn size.