Gitirana and Fredlund (2004) Fit 
The Gitirana and Fredlund dialog contains the equation parameters necessary to mathematically represent the SWCC curve with the equation published by Gitirana and Fredlund (2004). A description of the theory can be found in the SVSOILS Theory Manual.
Yb: The Yb field refers to a fitting parameter in the Gitirana and Fredlund (2004) equation. The Yb parameter is indirectly related to the airentry value of the soil.
Y res: The Y res field refers to another fitting parameter in the Gitirana and Fredlund (2004) equation. The Y res parameter is the residual suction for a soil.
S res: The S res field refers to another fitting parameter in the Gitirana and Fredlund (2004) equation. S res is the residual degree of saturation for a soil.
agg: The agg field refers to another fitting parameter in the Gitirana and Fredlund (2004) equation. agg is a measure of the sharpness of curvature experienced at each break point along the fitted curve.
Fit: The Fit indicates whether the experimental data has been fit with the Gitirana and Fredlund (2004) equation.
Error: The Error field shows the difference between the fitted data and the laboratory values in terms of R2.
Residual WC: The Residual WC refers to the calculated residual gravimetric water content using the Gitirana and Fredlund (2004) equation.
AEV: The AEV is the airentry value calculated using the Gitirana and Fredlund (2004) fit of the soilwater characteristic curve (kPa).
Max. Slope: The Max. Slope refers to the maximum slope (on a semilog plot) from the Gitirana and Fredlund (2004) fit of the soilwater characteristic curve (unitless).
Click the graph button at the bottom of the dialog to display a graph.
