Average performance of TAFs, by issuing office May 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 51151 56137 91% 55975 60251 93% 3686 9974 37%
Edmonton 67231 71434 94% 69382 73047 95% 2177 5180 42%
National 118382 127571 93% 125357 133298 94% 5863 15154 39%