Fig. 3
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Six representative XP spectra from the 885 objects removed. The two prominent CN bands (purple areas) are located at the 7165–8108 Å and 8160–9367 Å ranges. The red dashed lines mark the top of the band head. The spectra are normalized and offset from one another by k × 1.0 + 0.2 for clarity (where k is an integer that varies from 0 to 6 from the bottom to the top spectrum).
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