All changes to tower
| Date | Change | Source |
|---|---|---|
| 30 Apr 2016 | Tenor note not G (nominal: F#+5c) | David Kelly tonal analysis via pNBR |
| 1-6: nominal added (and note amended) | David Kelly via e-mail | |
| 24 Nov 2011 | 1: wt amended; 1-6: turning, frame id added; frame info added | John Baldwin via database |
| 6 Oct 2009 | 1-6: canon info added | [George Massey] via e-mail |
| 29 Jan 2005 | Revised est tenor weight (previously ~10cwt) | David Bryant (based on A Bull estimate) via e-mail |