Upper panels: redshift probability distribution for each target. Solid lines from light to dark red mark 1, 2, and 3σ confidence levels. Green points for ID 7 mark the redshift solutions obtained by combining spectroscopy and photometry as described in Sect. 4.2. Middle panels: optimally extracted 1D grism spectra (black) and best-fitting solutions (red) of our targets. The noise vector is shown in grey in each panel. Bottom panels: corresponding 2D G141 spectra. The colour scale is in linear scale. Galaxies are shown in order of increasing redshift.