Average performance of TAFs, by issuing office June 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 49416 54498 91% 54526 58796 93% 2821 8095 35%
Edmonton 65456 70073 93% 68059 71823 95% 2188 5424 40%
National 114872 124572 92% 122585 130618 94% 5009 13518 37%