All changes to tower
| Date | Change | Source |
|---|---|---|
| 16 Aug 2016 | 1-3: frameid added; frame info added | David Sloman via e-mail |
| 17 Aug 2009 | Tuning info added | Tim Jackson (GAD NBR) via e-mail |
| 16 Aug 2009 | Additional tower | Andrew Aspland via e-mail |
| All: details added | John Baldwin via database |