Place

Radon Concentration (Bq∙l⁻¹)

References

Range

Mean Value

Jeddah City, Saudi Arabia

5.56 - 14.87

9.92

[ 55 ]

Ratchaburi, Thailand

-

17 ± 0.9

[ 56 ]

Krakow, Poland

1.30 - 8.32

-

[ 57 ]

Egypt

0.93 - 6.89

-

[ 58 ]

Lubin, Poland

0.009 - 0.388*

0.0994*

[ 59 ]

Arar City, Saudi Arabia

5 - 10

-

[ 50 ]

Kuwait

1.02 - 6.05

2.97 ± 1.44

[ 60 ]

Algeria

2.6 - 14

7 ± 4

[ 61 ]

Mexico and Florida (fresh coconut water)

0.38 - 1.72

1.02^§

This work

Various markets (packaged coconut water)

0.04 - 0.57

0.15^§

This work