I believe Billy is using MarketSci's monthly map. Here is July:

http://marketsci.wordpress.com/2011/...for-july-2011/

My own work has found slightly bearish seasonality on days of the 2, 5 and 7 year T-Note Auctions (today, tomorrow and Thurs at 1:00 pm) when the market is in an up trend. Intraday, I've also observed the market tends to be down more often before the report, with a relief rally after the auction. I will try to update this study and post in VIT after I return from a trip next week.