Comparison of the evolution of the electron density. The top row shows the density calculated with detailed treatment of the radiative processes by RADYN (solid black lines), as well as the density calculated using the recipe of GF90 (dashed green lines) and HCD22 (dashed orange lines) for Case FA. The following three rows are the same as the top row, but for Cases FB, FC, and FD, respectively. The density deviation between the GF90 recipe and RADYN results is also shown as a horizontal bar at the top of each panel, and the density deviation between the HCD22 recipe and RADYN results is shown at the bottom of each panel, in a color scale.