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%