Average performance of TAFs, by issuing office August 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 54440 59051 92% 58566 62133 94% 2897 7090 41%
Edmonton 68870 72774 95% 70594 73981 95% 2104 5136 41%
National 123309 131825 94% 129160 136114 95% 5001 12226 41%