Average performance of TAFs, by issuing office April 2013
  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 49632 55018 90% 54992 59621 92% 3592 9224 39%
Edmonton 64640 69913 92% 67874 72069 94% 2838 5753 49%
National 114272 124931 91% 122866 131690 93% 6431 14977 43%