Average performance of TAFs, by issuing office September 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 51293 55164 93% 55377 58497 95% 2691 6060 44%
Edmonton 66005 70464 94% 68304 71943 95% 2352 4946 48%
National 117298 125629 93% 123681 130439 95% 5043 11007 46%