Huge eCPM Differences on random days

How come?

[adfree]

My heavy traffic days on my business site are weekdays.

My monthly average of eCPM hovers between 15 and 25.
Weekend days tend to be below 5.

There are random great weekdays where I exceed 40.

This week though (like some others in the past) starts with eCPM of 2 and below three days in a row.

Any guess?

[Jafo]

Could be a myriad of different things.

Ad budgets could dry up suddenly.

Natural fluctuations.

Basically the thousands of things written in 75% of the posts in this forum.

[adfree]

Good to know I am not alone... thanks.

[gendude]

Ad budgets could dry up suddenly.

Towards the end of a month, this can affect quite a few companies, especially smaller ones.

[Fish_Texas]

Look at monthly averages...not daily, it'll drive ya nuts.
Do your best on page content, ad placement, etc...go fishing and let er rip.
Fish Texas

[adfree]

Thanks guys, I'll work for average growth (yesterday eCPM 80, it's just too weird).

[maxgoldie]

Since the beginning of March there has been a lot of wide fluctuation for me too. There has been more and more since a year ago, but nothing like the past five weeks or so.