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# Functional overview # Functional overview
FEMTIC gives a three-dimensional electrical resistivity structure from the response functions at observation points on the Earth's surface. FEMTIC gives a three-dimensional electrical resistivity structure from the response functions at observation points on the Earth's surface.
Mesh type: tetrahedral mesh, hexahedral brick mesh, and non-conforming deformed hexahedral mesh **Mesh type**: tetrahedral mesh, hexahedral brick mesh, and non-conforming deformed hexahedral mesh
Data type: impedance tensor, vertical magnetic transfer function, inter-station horizontal magnetic transfer function, phase tensor, apparent resistivity, and phase. **Data type**: impedance tensor, vertical magnetic transfer function, inter-station horizontal magnetic transfer function, phase tensor, apparent resistivity, and phase.
Parallel computation: Hybrid MPI/OpenMP parallel calculation can be used. **Parallel computation**: Hybrid MPI/OpenMP parallel calculation can be used.
Model parameter: Subsurface electrical resistivity and distortion matrix of galvanic distortion. **Model parameter**: Subsurface electrical resistivity and distortion matrix of galvanic distortion.
# Release note # Release note
***v4.1*** Nov. 9, 2021 This new version supports difference filter. The error calculation of log10(apparent resistivity) is modified. Rotation angles of distortion matrix are limited to from -90 to 90 (deg.) when gains and rotations of galvanic distortion are estimated. ***v4.1*** Nov. 9, 2021 This new version supports difference filter. The error calculation of log10(apparent resistivity) is modified. Rotation angles of distortion matrix are limited to from -90 to 90 (deg.) when gains and rotations of galvanic distortion are estimated.