| Area | Value |
|---|---|
| 1. Wellington (NSW) | 6.6 |
| 2. Walgett | 6.6 |
| 3. Lightning Ridge | 6.5 |
| 4. Baradine | 6.5 |
| 5. Broken Hill | 6.4 |
| 6. Cobar | 6.2 |
| 7. Bourke | 6.2 |
| 8. Dubbo | 6.0 |
| 9. Coonamble | 6.0 |
| 10. Narromine | 5.9 |
| 11. Nyngan | 5.8 |
| 12. Coonabarabran | 5.8 |
| 13. Brewarrina | 5.7 |
| 14. Goodooga | 5.0 |
| 15. Wilcannia | 4.7 |
| 16. Wongarbon | 4.0 |
| 17. Geurie | 4.0 |