| Category | Compliance index levels | Frequency (number of wards) | Cumulative frequency | Frequency (wards) % | Cumulative frequency % |
| A | 20 - 39 | 3 | 3 | 16.7 | 16.7 |
| B | 40 - 49 | 11 | 14 | 61.1 | 77.8 |
| C | 50 - 69 | 4 | 18 | 22.2 | 100.0 |
| D | 70 - 100 | 0 | 100 | 0.0 | 100.0 |