Research on Development Strategy of Henan Aviation Economy under the Background of Regional Economy

Table 4

Gray comprehensive correlation result.

Evaluation indicator	Total gross domestic product in Henan province	The secondary industry	The tertiary industry
Cargo throughout capacity	0.64	0.61	0.78
Passenger throughout capacity	0.68	0.63	0.89
Export volume	0.54	0.51	0.64
Foreign trade volume	0.56	0.56	0.62
Air passenger turnover volume	0.79	0.89	0.65
Air freight turnover volume	0.70	0.79	0.60