Average performance of TAFs, by issuing office October 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 51021 56542 90% 56875 61110 93% 2918 6715 43%
Edmonton 62733 70245 89% 67041 73660 91% 3925 9422 42%
National 113754 126787 90% 123916 134770 92% 6843 16137 42%