Average performance of TAFs, by issuing office February 2011
  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 44453 50147 89% 50202 54422 92% 3018 7411 41%
Edmonton 58104 64005 91% 61296 66190 93% 3281 6941 47%
National 102557 114152 90% 111498 120611 92% 6299 14352 44%