Stacked spectra using the NIRSpec/MSA prism spectra of galaxies at 4 ≤ z < 10 belonging to the JADES survey. Top panel: Spectrum extracted from the central pixel of the 2D stacked spectrum. The cyan (violet) line is the best-fit function for the continuum and the [O III]λ5007 and Hβ ([O II]λ3727, [Ne III]λ3869) spectral lines. Bottom panel: Spectrum extracted from the second pixel off central (i.e. ∼1.2 kpc radius) of the 2D stacked spectrum. The colour coding and labels are the same as in the top panel. Even from a visual inspection of these two panels, we note a decrease in the [Ne III]λ3869/[O II]λ3727 ratio towards larger radii, i.e. from pixel 0 ([Ne III]λ3869/[O II]λ3727 ∼ 1) to pixel 2 ([Ne III]λ3869/[O II]λ3727 < 1).