Strange number next to scores in Swiss tournaments

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Avatar of c-burrows

When playing in a Swiss tournament, each player has a strange number next to their scores.  What does it mean?

I highlighted my strange number (16.5) with a blue circle.

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Avatar of CrazyCompany2

How is it calculated?

Avatar of manekapa

https://support.chess.com/customer/en/portal/articles/1444840-what-happens-when-there-is-a-tied-score-and-what-is-the-tie-break-