  We investigated the interstellar medium properties of the disc and outflowing
gas in the central regions of nine nearby Seyfert galaxies, all characterised
by prominent outflows. These objects are part of the Measuring Active Galactic
Nuclei Under MUSE Microscope survey, which aims to probe their physical
conditions and ionisation mechanism by exploiting MUSE unprecedented
sensitivity. We studied the different properties of the gas in the disc and
outflow with spatially and kinematically resolved maps by dividing the
strongest emission lines in velocity bins. We associated the core of the lines
with the disc, consistent with the stellar velocity, and the redshifted and the
blueshifted wings with the outflow. We find that the outflowing gas is
characterised by higher values of density and ionisation parameter than the
disc, which presents a higher dust extinction. Moreover, we distinguish high-
and low-ionisation regions across the portion of spatially resolved narrow-line
region traced by the outflowing gas. The high-ionisation regions characterised
by the lowest [NII]/H{\alpha} and [SII]/H{\alpha} line ratios generally trace
the innermost parts along the axis of the emitting cones where the [SIII]/[SII]
line ratio is enhanced, while the low-ionisation regions follow the cone edges
and/or the regions perpendicular to the axis of the outflows, also
characterised by a higher [OIII] velocity dispersion. A possible scenario to
explain these features relies on the presence of two distinct populations of
line emitting clouds: one is optically thin to the radiation and is
characterised by the highest excitation, while the other is optically thick and
is impinged by a filtered, and thus harder, radiation field which generates
strong low-excitation lines. The highest values of [NII]/H{\alpha} and
[SII]/H{\alpha} line ratios may be due to shocks and/or a hard filtered
radiation field from the AGN.
