Average performance of TAFs, by issuing office July 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 55017 58605 94% 57656 60575 95% 2253 6096 37%
Edmonton 71296 75044 95% 73214 76320 96% 2123 4722 45%
National 126313 133650 95% 130869 136895 96% 4376 10818 40%