| Obtained optical spectra for X-ray sources | 207 | |
| Positive literature classifications by Marano | ||
| et al. (1988) and Zitelli et al. (1992) (partly reobserved) | 30 | |
| New optical counterparts of ROSAT sources | ||
| Zamorani et al. (1999) (partly reobserved) | 14 | |
| New positive spectroscopic classifications of XMM sources | 96 | |
| Total positive spectroscopic classifications of XMM sources | 140 | |