
| Universe : | Prime Timeline |
| Name : | Peak transitional threshold [1] |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | Generic official information |
| Series : | Season |
| Episode : | Generic official information |
| © Graham & Ian Kennedy | Page views : 17,099 | Last updated : 1 Jan 1970 |