Table 1.
The ratio of low‐cost dust sensors for each Class based on particulate matter: (a) module; (b) standalone; (c) embedded type sensor
| Class 1 | Class 2 | Class 3 | Class 4 | Total | |
|---|---|---|---|---|---|
| (a) Module type | |||||
| PM1 | 2 (3.8%) | 2 (3.8%) | 4 (7.5%) | 3 (5.7%) | 11 (20.8%) |
| PM2.5 | 8 (15.1%) | 4 (7.5%) | 6 (11.3%) | 6 (11.3%) | 24 (45.3%) |
| PM10 | 3 (5.7%) | 4 (7.5%) | 3 (5.7%) | 8 (15.1%) | 18 (34.0%) |
| Total | 13 (24.5%) | 10 (18.9%) | 13 (24.5%) | 17 (32.1%) | 53 (100%) |
| (b) Standalone type | |||||
| PM1 | 10 (7.9%) | 4 (3.2%) | 8 (6.3%) | 3 (2.4%) | 25 (19.8%) |
| PM2.5 | 15 (11.9%) | 10 (7.9%) | 22 (17.5%) | 11 (8.7%) | 58 (46.0%) |
| PM10 | 7 (5.6%) | 7 (5.6%) | 15 (11.9%) | 14 (11.1%) | 43 (34.1%) |
| Total | 32 (25.4%) | 21 (16.7%) | 45 (35.7%) | 28 (22.2%) | 126 (100%) |
| (c) Embedded type | |||||
| PM1 | 13 (15.3%) | 9 (10.6%) | 15 (17.6%) | 5 (5.9%) | 42 (49.4%) |
| PM2.5 | 9 (10.6%) | 10 (11.8%) | 11 (12.9%) | 13 (15.3%) | 43 (50.6%) |
| Total | 22 (25.9%) | 19 (22.4%) | 26 (30.6%) | 18 (21.2%) | 85 (100%) |