Average performance of TAFs, by issuing office January 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 47856 55232 87% 55351 60980 91% 4062 9707 42%
Edmonton 61220 70850 86% 66762 74711 89% 5483 12200 45%
National 109076 126082 87% 122114 135691 90% 9545 21907 44%