| - | | The '-' sign means no information due to: changes in the level of presentation or in the list of territorial units or modification of the list of variables in a given statistical period |
| - or 0 | n | Data is not available yet, will be available |
| . lub 0 | x | Data not available, classified data (statistical confidentiality) or providing data impossible or purposeless |
| . lub 0 | X | Methodological changes, data not available, classified data (statistical confidentiality) or providing data impossible or purposeless |
| 0 | A | Methodological changes, value less then approved presentation format |
| 0 | a | Value less then approved presentation format |
| 0 | Z | Methodological changes, significant value, the zero result of non-zero input data of the algorithm, e.g. zero natural increase, if the number of deaths is equal to the number of births |
| 0 | z | Significant value, the zero result of non-zero input data of the algorithm, e.g. zero natural increase, if the number of deaths is equal to the number of births |
| value | k | Aggregate may be incomplete |
| value | K | Methodological changes, aggregate may be incomplete |
| value | p | Including data for the powiat and the city with powiat status |