Section 4. Overflight Operations

Count IFR overflight operations as follows: One count for each segment of flight when an aircraft on an IFR flight plan or SVFR clearance transits the airspace. A TRACON that hands an aircraft off to the tower and the aircraft returns to the TRACON, count the additional portion as a separate segment.
Count VFR overflight operations as follows:
One count for each segment when an aircraft operating VFR transits the airspace. A TRACON that hands an aircraft off to the tower and the aircraft returns to the TRACON, count the additional portion as a separate segment.

NOTE-

Consider operations of more than one aircraft operating in a formation as a single aircraft. If the formation breaks up into smaller formations, consider each additional formation as a separate aircraft.