| Correlation | Gross output value | Number of enterprises (unit) | Passenger traffic | Light industry | Heavy industry |
| Gross output value | 1.000 | 0.930 | 0.923 | 0.955 | 0.990 |
| Number of enterprises (unit) | 0.930 | 1.000 | 0.818 | 0.816 | 0.905 |
| Passenger traffic | 0.923 | 0.818 | 1.000 | 0.880 | 0.930 |
| Light industry | 0.955 | 0.816 | 0.880 | 1.000 | 0.954 |
| Heavy industry | 0.990 | 0.905 | 0.930 | 0.954 | 1.000 |