All changes to tower
| Date | Change | Source |
|---|---|---|
| 24 Jan 2020 | 1-6,Svc: frameid added; fr1: details added | Tim Jackson via e-mail |
| 29 Jun 2011 | 1-5: app wt added (twr notice); Svc: nominal added | Philip Denton via e-mail |
| Svc: (est)wt added | Philip Denton via e-mail | |
| 8 Nov 2004 | Tenor nominal added | Bill Hibbert via e-mail |