| _id | Month | Average Departure Delay Per Flight Mins (All Causes) | Immigration, Customs and Health: Share of All Primary Delay () | Immigration, Customs and Health (Mins) | colspacer |
|---|---|---|---|---|---|
| Month | Average Departure Delay Per Flight Mins (All Causes) | Immigration, Customs and Health: Share of All Primary Delay () | Immigration, Customs and Health (Mins) |