TABLE A1
A history of updates to storm-related operational system parameters.
| Release | IOC | LPV Release 6/7 | LPV Release 8/9.2 | WFO Release 3A | Release 46-CY16 | Release 51-CY18 |
|---|---|---|---|---|---|---|
| Date of release | 7/10/2003 | 9/27/2007 | 9/22/2008 | 10/20/2011 | 8/24-27/2016 | 9/11-14/2018 |
| Number of stations | 25 | 34 | 38 | 38 | 38 | 38 |
| WAAS IGP mask | 002 | 003 | 004 | 005 | 006 | 007 |
| Number of IGPs | 190 | 321 | 317 | 318 | 306 | 306 |
| Fit measurements | uncorrelated | uncorrelated | uncorrelated | correlated | correlated | correlated |
| hi | 350 km | 350 km | 350 km | 350 km | 350 km | 350 km |
 | 35 cm | 35 cm | 35 cm | 30 cm | 30 cm | 30 cm |
 | 35 cm | 35 cm | 35 cm | 1 m | 1 m | 1 m |
| ddecorr | NA | NA | NA | 8000 km | 8000 km | 8000 km |
| Rmax, Rmin | 2100, 800 km | 2100, 800 km | 2100, 800 km | 2100, 800 km | 2100, 800 km | 2100, 800 km |
| Ntarget, Nmin | 30, 10 | 30, 10 | 30, 10 | 30, 10 | 30, 10 | 30, 10 |
| λW, φW | NA | 130°W, 26.75°N | 130°W, 21.75°N | 130°W, 21.75°N | 130°W, 21.75°N | 130°W, 21.75°N |
| λM, φM | NA | 80°W, 18°N | 80°W, 13°N | 80°W, 13°N | 80°W, 13°N | 80°W, 13°N |
| λE, φE | NA | 60°W, 18°N | 60°W, 13°N | 40°W, 13°N | 40°W, 13°N | 40°W, 13°N |
| Pfa | 10-3 | 10-3 | 10-3 | 10-3 | 10-3 | 10-3 |
| Rnoise | No | Yes | Yes | Yes | Yes | Yes |
| Rirreg | static | dynamic | dynamic | dynamic | dynamic | dynamic |
| Tirreg, trip | 1 | 2.5 | 2.5 | 3.0 | 3.0 | 3.0 |
| tirreg, hyst | 15 min | 30 min | 30 min | 30 min | 30 min | 30 min |
| GIVEmax | 45 m | 45 m | 45 m | 45 m | 45 m | 45 m |
| TESD,trip | NA | 50 | 50 | 32 | 32 | 32 |
| tESD,confirm | NA | 1 hr | 1 hr | 1 hr | 1 hr | 1 hr |
| TESD,recovery | NA | 45 | 45 | 29 | 29 | 29 |
| tESD,recovery | NA | 8 hr | 8 hr | 8 hr | 8 hr | 8 hr |
| TMSD,trip | NA | NA | NA | NA | 10 | 10 |
| tMSD,confirm | NA | NA | NA | NA | 10 min | 10 min |
| TMSD,recovery | NA | NA | NA | NA | 10 | 10 |
| tMSD,recovery | NA | NA | NA | NA | 10 min | 10 min |