My site is 7 years old. It was #5 for my main search term. Now it's on the third page. Hopefully, it will bounce back to #5 or higher after Google is finished doing whatever it's doing.
I'm getting some decent traffic back on my old sites. It has increased since 5 weeks ago, but nothing compared to when my SERP was stable.
It doesn't looks like a normal fluctuation. My 2 years old website loosed their ranking from 1st page to 3rd or nine on many keywords. Something big is going on at Google's side but they have not officially announced something related to this rollback.
My main site's main keyword has been up and down about 10 spots the last week or so - secondary main keyword has been fluctuating about the same 10 spots on the same days... at least it keeps bouncing higher each time before it takes a few steps back BTW - the site is about a year and a half old.
check on the following DC and the results are different compared to current DC running, 66.102.7.104 216.239.57.99 216.239.57.147 216.239.57.104 216.239.53.99 216.239.53.104
How do you track the rankings intra-day like that? We see the same thing but only look end of day. I would be very interested to see what your doing.