| TAF amendment response time results by issuing office for February 2011 | ||||||||
| EC Weather Centre Location | Number of observations not covered by current TAF | Number responded to by an amended TAF | Number responded to by next regular TAF | Number where weather changed back to match TAF | Number where weather and TAF remained inconsistent | Average response time in minutes | Percentage of TAF responses within 20 minutes | Number of proactive amendments |
| Montreal | 3008 | 1449 | 261 | 1208 | 90 | 22 | 60% | 878 |
| Edmonton | 2375 | 1390 | 181 | 765 | 39 | 18 | 75% | 973 |
| National | 5383 | 2839 | 442 | 1973 | 129 | 20 | 67% | 1851 |