Levels of radioactive materials in the fallout obtained everyday, 2024 Fiscal year
The sampling and measurement are conducted at the Tokyo Metropolitan Institute of Public Health (Hyakunin-cho, Shinjuku-ku, Tokyo)
| Sampling date | 131I Bq/kg |
Radioactive Cesium | |
|---|---|---|---|
| 134Cs Bq/kg |
137Cs Bq/kg |
||
| 9:30, Thu., 25 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 24 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 23 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 22 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 21 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 20 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 19 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 18 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 17 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 16 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 15 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 14 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 13 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 12 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 11 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 10 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 09 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 08 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 07 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 06 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 05 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 04 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 03 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 02 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 01 Jul. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 30 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 29 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 28 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 27 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 26 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 25 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 24 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 23 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 22 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 21 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 20 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 19 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 18 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 17 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 16 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 15 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 14 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 13 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 12 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 11 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 10 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 09 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 08 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 07 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 06 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 05 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 04 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 03 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 02 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 01 Jun. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 31 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 30 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 29 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 28 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 27 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 26 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 25 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 24 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 23 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 22 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 21 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 20 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 19 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 18 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 17 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 16 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 15 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 14 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 13 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 12 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 11 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 10 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 09 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 08 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 07 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 06 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 05 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 04 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 03 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 02 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 01 May. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 30 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 29 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 28 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 27 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 26 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 25 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 24 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 23 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 22 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 21 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 20 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 19 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 18 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 17 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 16 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 15 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 14 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 13 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 12 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 11 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 10 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 09 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 08 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sun., 07 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Sat., 06 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Fri., 05 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Thu., 04 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Wed., 03 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Tue., 02 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
| 9:30, Mon., 01 Apr. - 9:30 the following day | ND(not detectable) | ND(not detectable) | ND(not detectable) |
- Samples are collected and analyzed everyday using a germanium semiconductor detector.
- It is known that rainfall may increase values.
- The number of significant digits of values is set as 2 in order to be consistent with that of the Japanese government.
- Please see here about the principle behind “ND (Not Detectable)”.
- A unit of values is Bq/m2, identical to MBq/km2.
Please see the pages for each year for data from previous surveys
- Levels of radioactive materials in the fallout obtained everyday , 2020 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2019 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2018 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2017 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2016 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2015 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2014 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2013 Fiscal year
- Levels of radioactive materials in the fallout obtained everyday , 2012 Fiscal year
- Levels of radioactive materials in in the fallout obtained everyday , 2011 Fiscal year and 2010 Fiscal year