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Table 3 Assignment of performance levels of ecosystem service values

From: Rapid assessment checklist for green roof ecosystem services in Bangkok, Thailand

Performance level

Definition

Poor

(Score: 0–39)

- Providing low ecosystem services

- The indicators achieved less than 40% of the reference values, then the green roof lacks several desirable characteristics

Intermediate

(Score: 40–59)

- Providing moderate ecosystem services

- The indicators achieved 40–59% of the reference values, then some of desirable characteristics are found

Good

(Score: 60–79)

- Providing generally high ecosystem services

- The indicators achieved 60–79% of the reference values, then most of desirable characteristics are found

Excellent

(Score: 80–100)

- Providing high ecosystem services

- The indicators achieved more than 80% of the reference values, then most or all of desirable characteristics are found