b) wyższa średnia biegopunktowa ze wszystkich biegów, w których
zainteresowani zawodnicy wzięli udział w meczach DMP rund 1 - 7 -
przy równych średnich o kolejności decyduje większa liczba startów, a
przy równości startów decydująca jest większa suma zdobytych na
torze punktów,

b) the higher heat-point average counted from all races in which the
involved riders took part in the DMP tournament matches of rounds 1 -
7 - with equal averages, the greater number of starts decides the
order, and in the case of equal starts, the greater sum of points scored
on the track is decisive
https://imme-cdn.speedwayekstraliga.pl/2021/05/2021_imme__20...

Polish term (edited): średnia biegopunktowa

Average Heat Score (AHS)

The indicator of individual riders’ sport level classification in Polish speedway leagues is the Average Heat Score (AHS) which is the total number of points scored divided by the number of heats in the match. In traditional scoring, the AHS can be from 0.00 to 3.00 (3 points are awarded for winning the heat, 2 points for 2nd place, 1 point for 3rd place and no points for the last place). Each rider’s AHS is updated every competition and is based on their performance in each competition (PZM—Polish Motorsport Association, 2021). Every league in the world has the same method of calculating the AHS, except for the British league, which has what is known as the CMA (Calculated Match Average). The British CMA is the averaged points per match of a given competitor (total points divided by total heats, multiplied by 4). It indicates the rider’s class and current disposition, as the CMA is updated on the 1st and 15th of each month (SCBGB—Speedway Control Bureau GB, 2021).
https://www.frontiersin.org/articles/10.3389/fphys.2022.8129...

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Note added at 8 hrs (2022-07-08 06:16:27 GMT)
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the Average Heat Score (AHS) which is the total number of points scored divided by the number of heats in the match.