Left: coefficients of the viscosity of charged particles (, blue line) and neutrals (, orange lines), and the thermal conductivity of neutrals (, green lines), in units of m² s⁻¹, as from Eq. (14). The neutral viscosity and thermal conductivity coefficients are limited to 10⁹ m² s⁻¹. Right: ion-neutral (ν_in, blue lines), neutral-ion (ν_ni, orange line) collision frequencies, and frequencies associated with waves: fast magneto-acoustic (ω_fast, green lines), in-plane Alfvén for “L1” shear (, red lines), acoustic in the neutral fluid (ω_cn, black line) as functions of height. Values for the model with the original density contrast model are shown with solid lines, and for the enhanced density contrast with dotted lines.