The teams play each other on a home-and-away basis with the bottom two teams automatically relegated to Division Two.
16pts for a win, 3pts for a draw. Upto 8 bonus points awarded in first 110 overs of each team's first innings.
If sides finish level on points, they will be separated by most wins; then fewest losses; then points achieved in matches between the teams in question; then most wickets taken; then most runs scored.
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