The Polonium plot

10

/

2017

6.2

/

2021

4.5

/

1975

5

/

NaN

6.4

/

NaN

8.4

/

2005

6

/

1917

4.3

/

2004

6.7

/

1966

5.4

/

1953

7.4

/

2025

6.667

/

2023

5.5

/

2010

8

/

2017

10

/

1990

4.455

/

1956

5

/

2018

7.2

/

2019

9

/

2020

7

/

2013

6.2

/

2001

5.5

/

2013

0

/

2015

0

/

2022

10

/

2024

6

/

1985

7.375

/

2016

4.773

/

2012

4.2

/

2014

9

/

1983

8.5

/

1969

6

/

2010

4

/

1992

7.3

/

2004

8.424

/

2017

10

/

2017

0

/

2022

3.4

/

2018

8.3

/

2023

7.3

/

1984