All changes to tower
| Date | Change | Source |
|---|---|---|
| 6 Jun 2020 | fr1: layout added | Chris Pickford via e-mail |
| 9 Aug 2018 | 4: date amended | Chris Pickford via 00013018 |
| 18 Oct 2012 | 1-5: turning, frameid added; 4,5: canons amended; | Chris Pickford via 00010108 |
| frame info added | Chris Pickford via 00010108 |