BTS | Table 1: System of Scheduled Aviation Activities in the United States: Number of Passengers and Aircraft Departures (in natural logs)

Table 1: System of Scheduled Aviation Activities in the United States: Number of Passengers and Aircraft Departures (in natural logs)

Network variants (1)	System equations (2)	Intercept (3)	Seasonal dummy (4)	Share of Southwest Airlines (5)	Share of RJ carriers (6)	9/11 dummy (7)	Ln (one quarter lag) (8)	Adj. R² (9)	N (used) (10)	N (read) (11)
PP	ln(Pax_ij)	0.5039*	0.0958*	0.0032*	-0.0011*	-0.1083*	0.9107*	0.8903	39,880	73,438
PP	ln(A/C Dep_ij)	0.1928*	0.0367*	0.0017*	-0.0006*	0.0465*	0.9215*	0.8865
HH	ln(Pax_ij)	-0.8040*	0.1205*	0.0009*	-0.0004*	-0.0161*	0.9203*	0.9039	34,192	35,827
HH	ln(A/C Dep_ij)	0.4363*	0.0407*	0.0011*	0.0013*	-0.0110*	0.9263*	0.9155
HS	ln(Pax_ij)	-0.7568*	0.0863*	0.0012*	0.0006*	-0.0309*	0.9128*	0.8485	97,171	118,864
HS	ln(A/C Dep_ij j)	0.4290*	0.0006	0.0007*	0.0012*	-0.0028	0.9151*	0.8591

Key: * = 99% level of significance.

Note: First row in each network variant represents scheduled passengers and the second row represents the number of aircraft departures.