1. ”Bq” (Becquerel) is the unit of radioactivity. One Bq corresponds to radioactive decay per second.

2. "*.*E+@@" in this table means *.*x10^@@.

3.“N.D.” (Not Detectable) means that the radioactivity of the sample is less than the lower detectable limit.

4. "FY" means fiscal year. The fiscal year begins on April 1 in Japan.For example, FY1999 means from April 1, 1999 till March 31, 2000.

5. Guideline values are defined specifically for each power station and are equivalent to the maximum dose value, 50 mili Sievert/year.  Sievert (Sv) is the unit of radioactive dose that represents the effect of radiation on the human body. Ordinary, the natural dose to the human is estimated 2.4mSv/year (United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report).  The Japanese law provides that the dose equivalent limit caused by nuclear power station to public is 1mSv/year.

6. These data are copied from Japanese web-site of SEPCO with their permission.