Average performance of TAFs, by issuing office May 2012
  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 52904 57764 92% 57692 61743 93% 3096 8280 37%
Edmonton 66103 71257 93% 69433 73676 94% 2616 6484 40%
National 119007 129021 92% 127125 135419 94% 5712 14764 39%