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Ambient Gamma Radiation Level in Hong Kong
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| Remarks: | ||
| 1. | From readings taken at various locations in Hong Kong during the period 1987-2011, the background ambient gamma radiation levels may vary between 0.06 and 0.30 microsievert per hour. (1 microsievert = 0.000001 sievert = 0.001 millisievert) | |
| 2. | Temporal variations are generally caused by changes in meteorological conditions such as rainfall, wind and barometric pressure. | |
| 3. | Spatial variations are generally caused by differences in the radioactive content of local rock and soil. | |
| 4. | Quality control has not been applied to the above data and the values may be affected by noises. | |
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