Table 4 Screening threshold of exhaust opacity for detecting high-emitting vehicles in Bin5.
From: Potential of big data approach for remote sensing of vehicle exhaust emissions
Emission | Raw data of exhaust smoke opacity in Bin5 | Cutpoints of exhaust smoke opacity for screening high-emitting vehicles in Bin5 | Statistical average data after screening out 5% high emission vehicles | |
|---|---|---|---|---|
Maximum | Statistical average | |||
Opacity (%) | 27 | 15.88 | 23.5 | 14.52 |
