Where can I find an average transaction value chart? I'm curious on what is the average amount of BTC transacted per transaction. I'd basically like to combine blockchain.info's Estimated Transaction Value and Number of Transactions Per Day charts.

I'm writing my own script locally, but I wonder if this kind of info is already available online somewhere (googling for "bitcoin average transaction value" didn't help).
This chart can answer that question for any period you choose:

https://tradeblock.com/bitcoin/historical/1w-f-txval_per_avg-11101

Measured in BTC, the average transaction value was naturally the highest in the early days of bitcoin when its value was much less in fiat terms