Four 5 × 531 pixels (corresponding to 1$\stackrel{″}{.}$5 × 711.54 nm) decontaminated and resampled spectrograms for object ID 2684805874647806467 and grisms RGS000+0, RGS180+4, RGS000-4, and RGS180+0 (from top to bottom). Resampled pixels flagged as unusable (NOT_USE) are in grey. The faint continuum and the bright Hα line at 1730 nm (z = 1.63) are consistently visible in all single-dither spectrograms, as well as a faint decontamination residual in the upper left of RGS000-4 spectrogram.