Fig. 4. Comparison of difference between grid and IRFM values for the 3 grids: CM, MLT noOV and MLT OV. . The CM models give the best overall agreement with the IRFM.
![[FIGURE]](img57.gif)
![[FORMULA]](img1.gif)
values for the 3 grids: CM, MLT noOV and MLT OV. ![[FORMULA]](img51.gif)
. The CM models give the best overall agreement with the IRFM.