Test

7.7

/

2018

7.778

/

NaN

7.7

/

1960

6.8

/

2013

6.7

/

1936

7.6

/

1933

5.944

/

2018

7.8

/

2001

8.345

/

1991

6.4

/

2023

7.601

/

1969

7.141

/

1968

8.187

/

1971

7.9

/

1980

7.1

/

1971

7.837

/

1993

6.345

/

1983