Average performance of TAFs, by issuing office April 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 50572 55107 92% 55167 58926 94% 2910 8030 36%
Edmonton 65186 70217 93% 68426 72479 94% 2365 5296 45%
National 115759 125324 92% 123593 131405 94% 5275 13326 40%