Hmmm on the site can not be mistakes in the calculations?
because im voiting for a "public" pool and today im got approximately 1.2 sem for 1000 votes, although yesterday he was in third place and showed approximately 1.33 sem for 1000 votes. It turns out I did not get about 10% from what was supposed to get.
Payment was for a full day
The site isn't making a mistake in calculations. Math is math.
Something you should consider (since you didn't provide your address to check) is that.....
The numbers are constantly changing.
Votes come and go which make a constant amount impossible.
As for the 'public' pool, it pays out at 5AM PST. So, if you vote in at 10AM, then you're not going to get the calculated amount since you were not voted in for a 24 hour period.
Also, for all pools, your votes doesn't count for the first 200 blocks (100 minutes) to prevent people from votes/unvoting constantly.
Basically, you will find that the following day will get you your full share since you will actually have a full 24 hours.
Also keep in mind that voting in 1000 votes (or whatever) showing you should expect 1.4 today, might show 1.3 tomorrow as more and more people vote in. Since votes are constantly changing, you should watch
http://pool.7u.org to see which pays more. Don't make the mistake of chasing the best pool, because unvoting from one might actually move it then to the best paying pool, just like voting in the best might move it down the list (And, you likely lose the potential profit on those votes for 200 blocks as well).