i am not talking about normal fluctuations. i am talking about big earning fluctuations despite stable traffic and click rates. example one day 15 dollars the next day 1 dollar. anybody have explanation ?
Then why are you asking us: "what is biggest fluctuation you noticed in your adsense earning from one day to the next day ?" If $7 to $1 is not a biggest fluctuation then I am sorry.
The biggest fluctuation for me is from a $0.50 on one day to $5 the next and then back to $2. Haven't earned anything more than $5 a day, really.