4.5.3.13.2 Vector Coefficients for Segment Models:

The naming conventions for the vector type coefficient $c$ are very similar to the rules mentioned above for scalar type coefficients. The only difference is that the resulting Coefficient is split into the lateral and vertical components denoted by the postfixes ``_x'' and ``_y'' (Table 4.21).

Table 4.21: Parameters common to vector coefficient Models

Name	Type	Description
Coeff_x	double	the resulting lateral component of the coefficient
Coeff_y	double	the resulting vertical component of the coefficient
dCoeff_x d_Cown	double	derivative of the lateral component of the coefficient to the column quantity
dCoeff_y d_Cown	double	derivative of the vertical component of the coefficient to the column quantity
dCoeff d_psi	double	derivative of the resulting coefficient to the electrostatic potential $\psi$
dCoeff_x d_MdlQuantity	double	derivative of the lateral component of the coefficient to the value of the quantity MdlQuantity
dCoeff_y d_MdlQuantity	double	derivative of the vertical component of the coefficient to the value of the quantity MdlQuantity