The estimated difficulty was to be around 1.59M and we ended up with 1.56M
It is hard to say for sure how much these attacks effected the retarget, but i think they did somewhat.
That's just ~1.886% change and it may be caused by another factors.
I can estimate that you would have to block all pools and solo miners for more than 6 hours completely to make a 2% change
if the hashrate is not growing.
I guess you are right.... if it did effect it at all it couldn't possibly be by much at all.
I am just trying to figure out why it seemed like all of the pools got hit the day before and day of the re-target, it seemed to me like they were really trying to do something.
Anyways great job with the pool man, yours did much better than most others through those nasty attacks.... I myself got targeted by some DDOSings recently, and its not fun... My ISP just about turned off my dedicated server for good because the floods exceeded 20gbps and crippled their network.