Study of Flight Departure Delay and Causal Factor Using Spatial Analysis

Table 2

Descriptive statistics and definitions of the variables used in the model.

Variables	Definition	Mean	s.d.	Min	Max
Delay	Total minutes of departure delay	587.824	428.433	0	2341
T	Technical failure at the target airport (equals 1 if technical failure occurs)	0.039	0.194	0	1
TL	Technical failure at the previous airport (equals 1 if technical failure occurs)	0.065	0.246	0	1
W	Weather condition at the target airport (equals 1 if weather is adverse)	0.018	0.132	0	1
WL	Weather condition at the previous airport (equals 1 if weather is adverse)	0.251	0.434	0	1
WR	Weather condition en route (equals 1 if weather is adverse)	0.016	0.124	0	1
CF	Flow control (equals 1 if conduct flow control)	0.571	0.496	0	1
CR	Route restriction (equals 1 if conduct route restriction)	0.122	0.327	0	1
NF	Scheduled departure traffic	16.943	4.414	4	27