| Object | Spectra | comm. |
| Z And | O I, N II, Mg V | |
| EG And | O II, Ne III, Ar III | * |
| R Aqr | O II+III, Ar III | * |
| T CrB | ||
| BF Cyg | ||
| CH Cyg | O II, Ar III | |
| CI Cyg | ||
| AG Dra | Mg VI+VII | * |
| RW Hya | O III, Ar IV | * |
| SY Mus | Ar V, Mg V | |
| AG Peg | O III, Ne III+IV+V, Ar V, Mg V | |
| AX Per | ||
| RX Pup | ||
| HM Sge | O II, Ar IV, Ne IV, Mg V | |
| RR Tel | N II, O II+III, Ar III+IV+V, Ne III+IV+V, Mg V+VI | |
| KX Tra | Mg V+VI | * |
| PU Vul | ||
| V1016 Cyg | N II, O II+III, Ar IV, Ne IV, Mg V | |
| V1329 Cyg | ||
| HBV475 | Mg V | * |
|
* All forbidden lines in the system can be explaind by a low density region in local thermal equilibrium and of one dominant temperature. |