Zoomed X-Shooter spectrum centerd on the CIII] doublet. Top: 2D spectrum at the original spectral resolution (R = 8900, 0.2 Å/pix) with the positions of the components indicated. Middle: Same spectrum as above with outlined the regions where the S/Ns were calculated in three spatial positions: below, above, and at the location of Ion3. The size of the boxes is 0.8″ × 250 km s⁻¹. Bottom: 2D RMS spectrum is shown with reported the same boxes shown in the middle panel with listed the corresponding SN values. Detections emerge on top of Ion3 spatial position.