All changes to tower
| Date | Change | Source |
|---|---|---|
| 3 Jul 2022 | Fr1: diagonal | C J Pickford |
| 10 Jul 2021 | URL amended | Tim Jackson |
| 13 Aug 2014 | URL added | Julia Deady via e-mail |
| 2 Feb 2010 | 3: date amended | David Sloman via 00008399 |
| Frame info added; 1-5: frame id added | John Baldwin via database |