All changes to tower
| Date | Change | Source |
|---|---|---|
| 23 Apr 2020 | 1,2,3: turning added | [James Hedgcock] via 00013707 |
| 7 Oct 2017 | 1,2: date amended; 3: diam amended | John Baldwin via 00012485 |
| 6 Oct 2017 | 1-6: frameid added; frame info added | David Sloman via e-mail |
| 29 Sep 2010 | URL added | Frank Lewis via e-mail |