Radiation monitoring post (the west for Hodogaya Ward France) (1m above the ground)
In Yokohama-shi, we started the regular measurement of atmospheric γ (gamma) dose of radioactivity in 1m above the ground point in radiation monitoring post which we installed in west municipal ownership place for Hodogaya Ward France on March 29, 2012.
In addition, as for the radiation doses such as authorization nursery school, private nursery school, elementary school, junior high school, park, please see page of "radiation related information".
＊ We update data every about one hour, but update may be late by trouble of data transmission.
＊ Indication of "-" is time when we were not able to display measurements by maintenance. Measurements that we can restore display later.
＊ It is gray every hour [nGy/h]) nanoas for the unit of measurements. As can exchanging to 1 nano gray every hour in [nGy/h] = 0.001μSv/h [μSv/h], for example, in [nGy/h], it is in 0.050μSv/h [μSv/h] in 50 nano gray every hour.
＊ All data after March 29, 2012 click this, and please see. In addition, CSV data, please click this.
＊ Please read size of browser in middle size or less. We can switch from "size" in indication menu.
Graph plotted the maximum on the day. Past graph, please click this.
※We can read data in portable site
[Gy/h] is credit indicating quantity of energy which radiation has in gray every hour. [Sv/h] is credit to express size of influence that radiation gives in the human body in sievert every hour.
[conversion table] When we assume 1 Gy = 1Sv
|1||Gy/h||Gray every hour||＝||1||Sv/h||Sievert every hour|
|1,000||mGy/h||Millimeters gray every hour||＝||1,000||mSv/h||Millisievert every hour|
|1 million||μGy/h||Microgray every hour||＝||1 million||μSv/h||Microsievert every hour|
|1 billion||nGy/h||Nanogray every hour||＝||1 billion||nSv/h||Nanosievert every hour|
Environmental Planning Bureau Environment Administration Division monitoring center telephone 045-671-3507 (weekdays from 8:30 to 17:15)