| Markets | Trader category | HHI | The Pre-Defined Intervals for HHI | Interpretation |
| Dar es Salaam | Wholesaler | 0.33 | HHI> 0.25 | Higher concentrated market |
| Retailer | 0.07 | HHI<0.15 | Low concentrated market | |
| Morogoro | Wholesaler | 0.22 | 0.15< HHI >0.25 | Moderately concentrated market |
| Retailer | 0.09 | HHI<0.15 | Low concentrated market | |
| Mbeya | Wholesaler | 0.25 | 0.15< HHI >0.25 | Moderately concentrated market |
| Retailer | 0.09 | HHI<0.15 | Low concentrated market | |
| Shinyanga | Wholesaler | 0.24 | 0.15< HHI >0.25 | Moderate concentrated market |
| Retailer | 0.12 | HHI<0.15 | Low concentrated market | |
| Dodoma | Wholesaler | 0.21 | 0.15< HHI >0.25 | Moderate concentrated market |
| Retailer | 0.10 | HHI<0.15 | Low concentrated market | |
| Arusha | Wholesaler | 0.27 | HHI> 0.25 | Higher concentrated market |
| Retailer | 0.11 | HHI<0.15 | Low concentrated market | |
| Lindi | Wholesaler | 0.23 | 0.15< HHI >0.25 | Moderately concentrated market |
| Retailer | 0.10 | HHI<0.15 | Low concentrated market | |
| All markets | Wholesaler | 0.24 | 0.15< HHI >0.25 | Moderate concentration market |
| Retailer | 0.09 | HHI<0.15 | Low concentrated market |