Measurement results of radiation doses in the air / Measurement results of radiation doses in the air at 1 meter above the ground (Shinjuku)
We measure radiation doses in the air at 1 meter above the ground (soil) once a day using portable measuring instruments called scintillation survey meters.
- Survey Period :
- May 2011 to March 2017
- Measuring instrument :
- TCS-166 (scintillation survey meter) manufactured by Hitachi Aloka Medical
- Time constant :
- 30 seconds
- Measurement method :
- Average of five repeat measurements
The sampling and measurement are conducted at the Tokyo Metropolitan Institute of Public Health (Hyakunin-cho, Shinju-ku, Tokyo).
Please see the pages for each year for data from previous surveys