USD values are calculated per day via API feeds from Poloniex (for STEEM and SBD values in BTC) and Coindesk (for USD value of BTC). For the top 50 reports in USD terms, I take the average USD value for STEEM and SBD for the week using the daily average which came out to:
STEEM: $4.79688
SBD: $5.19634
Previous Report:
STEEM: $5.57098
SBD: $7.04185
Assumptions
Please see the first report for a detailed explanation of my personal assumptions related to what this data could mean (along with commentary on previous reports). What it does not show is people powering up, powering down, or if they are buying or selling on an exchange. It's just some interesting data dealing with transfers to and from exchange accounts.
Linked Accounts
hitbtc includes hitbtc-exchange and hitbtc-payout, freewallet.org includes freewallet, and openledger includes openledger-dex.