All changes to tower
| Date | Change | Source |
|---|---|---|
| 5 Oct 2016 | PN amended: now 4th Thu (in rotation, with 5th by arr) | Jonathan Dickenson via e-mail |
| 29 Aug 2012 | PN info amended | Jonathan Dickenson via e-mail |
| 3,4: (app) date added; 1-6: frame id added; frame info added | John Baldwin via database |