Statistical results for T (top row), n_e (middle row), and V_LOS (bottom row) obtained within the contour that delimits the bulk of the different surges in Fig. 2. The statistics contain data from the optical depths where inversions are more reliable, from log₁₀(τ) = − 6.0 to −3.2, for the temperature, and from log₁₀(τ) = − 6.0 to −4.8 for the density and velocity. Left column: stacked histograms organized by raster, showing that the different surges have similar properties. Right panel: stacked histograms organized by log₁₀(τ) illustrating the variation of the physical parameters with the optical depth.