All changes to tower
| Date | Change | Source |
|---|---|---|
| 21 Mar 2022 | Fr1-3: layouts added (base layer provisional scheme) | |
| 3 Aug 2016 | 6: date amended (to approx) | David Sloman via e-mail |
| 7 Jul 2014 | 1-6: turning,frame id added; frame info added | Chris Pickford via 00010798 |
| 6 Jul 2014 | 3-6: nominal amended; 3,4,6: canon info added | Tim Jackson via 00010796 |
| 6 Feb 2007 | Tenor nominal added (Ab-14c) | Andrew Higson via pNBR |