Answer:
If the result values are displayed in red, this is a type of error message.
The defined depth z is insufficient. The standard specifies that the depth must be calculated up to the value where sigma_Z ≦ 0.2*sigma_r. In the graphic, 0.2*sigma_r is displayed as a gray line, sigma_Z as red.
The layer structure should be defined with sufficient depth that the two lines intersect.
In Image 01, the two lines do not intersect, so the values are displayed in red, and it is necessary to define sufficient depth.
