All changes to tower
| Date | Change | Source |
|---|---|---|
| 12 Apr 2011 | 1-6: nominal, turning, frame id added; frame info added | Andrew Higson via 00009216 |
| 3: diam added; 2,4,5: diam amended | Andrew Higson via e-mail | |
| 12 Sep 2003 | PN change from Wed 8pm to Monday 8pm | S Crosby via e-mail |