| Average performance of TAFs, by issuing office September 2013 | |||||||||
| VFR Category | Above IFR Alternate Category | Below IFR Alternate Category | |||||||
| EC Weather Centre Location | Correct Forecasts (hours) | Total Forecasts (hours) | VFR Reliability Index | Correct Forecasts (hours) | Total Forecasts (hours) | Alternate Reliability Index | False Alarms (hours) | Total Forecasts (hours) | Below Alternate False Alarm Ratio |
| Montreal | 50497 | 55842 | 90% | 55638 | 59825 | 93% | 3266 | 8146 | 40% |
| Edmonton | 64817 | 70000 | 93% | 67540 | 71902 | 94% | 2924 | 6940 | 42% |
| National | 115314 | 125843 | 92% | 123179 | 131728 | 94% | 6190 | 15086 | 41% |