I am going to say that this is a ridiculous waste of time because the variation for the interesting funds would be more than what one could expect to gain from knowing the information. I have found that the day or hour that I make a purchase changes the net performance more than any expense ratio or what's in the fund can. This is because the expense ratio differences of the funds that I am interested in are so small and the stock market so volatile that just buying a position at 0.2% less or 0.2% more than at another time is more than 10 years of expense ratio differences.
Perhaps another way to look at this is driving to work. If you no longer work, just remember when you did. How many minutes did it take you to drive to work? Did it matter at what time you started your drive? Mondays? Wednesday? 7 am? 9 am? School days? Holidays? Was the variation in time of travel so much that you couldn't predict within a few seconds how long it would take you to get to work?
That said, I want to use funds and ETFs found on Eric Haas's web site: http://www.altruistfa.com/dfavanguard.htm
Also I think it is better to come up with an asset allocation without reference to any funds. Then figure out some funds that will get you there. For reference, here is my current asset allocation without reference to any funds: viewtopic.php?p=1563521#p1563521
Do you see how I didn't mention any funds?
It's all about short-term opportunistic rebalancing due to a short-term change in one's asset allocation, uh, I mean opportunistic rebalancing, uh I mean rebalancing, uh I mean market timing.