The calendar year the figures cover.

The month the figures cover, as a number from 1 to 12.

The month the figures cover, as a three-letter abbreviation such as JAN.

The day the flights operated.

The name of the airspace entity, such as an ANSP, a functional airspace block or a whole area like the SES area.

What kind of entity the row is, and whether its airspace is defined by ANSP areas of responsibility (AUA) or by flight information regions (FIR).

The flight hours controlled, used as the base for the complexity score.

The total time aircraft spent in potential interactions with each other, in hours.

The time spent in interactions between climbing, cruising and descending aircraft, in hours.

The time spent in interactions between aircraft on crossing headings, in hours.

The time spent in interactions between aircraft at different speeds, in hours.

The version of the Base of Aircraft Data (BADA) aircraft performance model used. Scores from different versions shouldn't be compared.