Table 5. Multiple regression equations of fuel category

City pair and aircraft type	Equation	R2
ICNBKKA333	Y = –75.079 + 1.154 X1 + 1.076 X2 + 3.953 X3 + 0.906 X4 + 1.432 X5	0.722
ICNCDGA388	Y = –190.534 + 0.993 X1 + 1.235 X2 + 9.599 X3 + 0.944 X4 + 0.494 X5	0.899
ICNDPSA333	Y = –85.005 + 1.042 X1 + 1.116 X2 + 4.501 X3 + 0.964 X4 – 0.041 X5	0.965
ICNLAXA388	Y = –140.510 + 1.267 X1 + 1.134 X2 + 7.407 X3 + 0.853 X4 + 0.193 X5	0.639
ICNNGOB738	Y = –80.254 + 2.874 X1 + 1.519 X2 + 1.339 X3 + 0.999 X4 + 9.201X5	0.971
ICNNRTA333	Y = –97.184 + 5.702 X1 + 1.084 X2 + 3.738 X3 + 0.985 X4 + 1.084 X5	0.991
ICNSINB773	Y = –245.417 + 1.196 X1 + 1.092 X2 + 10.362 X3 + 1.021 X4 + 3.412 X5	0.937