The original statistical data for each set from 1 to 6 (GUS 2011; RAP 2005; AGP 1995; MRP 1995);
the accident was in 1986. and you wont find any data on it because russians who in reality ruled poland then didnt care.
Your original post was inaccurate at least in this point:
> We all had to take iodine pills for long time.
Now lets make a claim - living in high background radiation city in Poland is much worse than Chernobyl exposure even if we look at 1 year period.
https://pubmed.ncbi.nlm.nih.gov/16575762/
In Poland the mean effective equivalent dose resulting from Chernobyl accident was 932 microSv and is close to the limited dose permitted in Poland, equalling 1 mSv/year.
So according to original article I cited (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3526327/) living in Jelenia Góra (4.75mSv/year) with high background radiation is ~3 Chernobyl doses per year every year vs living in Świnoujście (1.06mSv/year).