Average performance of TAFs, by issuing office March 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 54038 59733 90% 60042 64518 93% 3290 8203 40%
Edmonton 68699 75294 91% 73049 78346 93% 3567 7800 46%
National 122737 135027 91% 133091 142864 93% 6856 16002 43%