Attributes:

Z-KW [-] (element wise) (zoning for K-values),

Z-SP [-] (element wise) (zoning for storage coefficients),

Z-LR [-] (element wise) (zoning for polyline-wise leakage coefficients)

These attributes are used to zone the data that will be calibrated during inverse modelling.

For all hydraulic conductivity attributes (KWER, KFWV, KWEV), the elements are divided into zones via Z-KW.

For the storage coefficients (SPEI or KSPE), zoning is carried out via Z-SP. The zoning is assigned to nodes because the inverse modelling calibrates the node-wise storage coefficients.

For polyline-wise leakage coefficients (LERA), zoning can be carried out using the Z-LR data type. As when defining the LERA data type, the correct sequence of nodes must be maintained. An integer value greater than zero is required as with all other zonal numbering.

For a more detailed description of zoning for inverse modelling, please refer to the description of ”Inverse modelling”.