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Table 2 Anticipated Performance Index (API) of Tree species

From: Roadside air pollution in a tropical city: physiological and biochemical response from trees

Grade Score (%) Assessment category
0 Up to 30 Not recommended
1 31–40 Very poor
2 41–50 Poor
3 51–60 Moderate
4 61–70 Good
5 71–80 Very good
6 81–90 Excellent
7 91–100 Best