All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 May 2020 | 1-3: nominal added,note amended | Tim Jackson via e-mail |
| Tenor note not B (nominal: C-16c) S | Nick Bowden (per TimJ #282) via pNBR | |
| 23 May 2016 | PN info added (18:30-19:30 Mon) | Helen Brotherton (LDG, Eastern Br Sec) via e-mail |
| 1-3: frameid added; frame info added | John Baldwin via database |