| Peaks | Literature | Binding energy (eV) | Intensity (c/s) | Assymetry | Base | Gaussian | Final state band and Brillouin zone |
| A | Iijima 1991 | 285.46 | 0.43 | 0.10 | 0.14 | 0.60 | p0 near Q |
| A1 | Eba 2009 Yueh 2001 | 287.21 | 0.21 | 0.00 | 0.00 | 1.20 | Free-electron-like interlayer state + adsorption p*C=C-OH or -(C=C-π*C=O) |
| A2 | This work | 288.49 | 0.34 | 0.00 | 0.00 | 2.60 | Free-electron-like interlayer state + adsorption p*C=C |
| A3 | This work | 291.78 | 4.23 | 0.00 | 0.00 | 1.10 | σ* C-O |
| B | Fayette 1998 | 292.93 | 3.80 | 0.07 | 0.16 | 0.90 | σ1, σ2: G → Q |