Average performance of TAFs, by issuing office March 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 50219 55171 91% 55081 59440 93% 3032 7788 39%
Edmonton 64129 69810 92% 68245 73073 93% 3386 7432 46%
National 114348 124981 91% 123326 132512 93% 6418 15220 42%