年份

⁷Be

⁴⁰K

¹³¹I

¹³⁴Cs

¹³⁷Cs

²¹⁴Bi

²²⁸Ra

²³²Th

2012

6.0

0.18

-

<0.005

<0.005

-

<0.010

<0.012

2013

5.9

0.086

-

<0.005

<0.005

-

0.023

0.015

2014

5.9

<0.079

-

<0.005

<0.005

-

0.013

<0.012

2015

4.6

<0.079

-

<0.005

<0.005

-

<0.010

<0.012

2016

4.7~7.1

<0.079

-

<0.005

<0.005

-

-

<0.012

2017

4.7

<0.079

-

<0.005

<0.005

-

<0.010

<0.012

2018

4.7

<0.079

-

<0.005

<0.005

-

<0.010

<0.012

2019

1.5~12

0.028~0.234

-

<0.005

<0.005

-

<0.010

<0.012

2020

0.71~12

0.024~0.094

-

<0.005

<0.005

-

<0.010

<0.012

2021

1.5~9.5

0.012~0.092

-

<0.005

<0.005

0.002

0.003

-

范围

0.71~12

<0.079~0.234

-

<0.005

<0.005

0.002

<0.010~0.023

<0.012~0.015