Table 4 Forecasts of Numbers of Passengers and Aircraft Movements,,,,,,
A. PASSENGERS (millions),,,,,,
Airport,Year,2003,2004,2005,2006,
GVA (1953–2002),Forecast,7.86,8.05,8.29,8.19,
,Observed,8.09,8.59,,,
,RMSE,0.43,0.69,1.02,1.33,
,Error,–2.84%,–6.29%,,,
ZRH (1953–2003),Forecast,in sample,16.41,16.55,16.59,
,Observed,17.02,17.25,,,
,RMSE,in sample,1.62,2.41,3.27,
,Error,in sample,–4.87%,,,
BSL (1953–2002),Forecast,2.85,2.84,3.07,3.49,
,Observed,2.48,2.59,,,
,RMSE,0.23,0.44,0.70,0.10,
,Error,14.92%,9.65%,,,
B. AIRCRAFT MOVEMENTS (hundreds of thousands),,,,,,
Airport,Year,2003,2004,2005,2006
GVA (1953–2002),Forecast,1.64,1.66,1.67,1.69
,Observed,1.63,1.67,,
,RMSE,0.07,0.10,0.14,0.17
,Error,0.61%,–0.60%,,
ZRH (1953–2003),Forecast,in sample,2.78,2.95,3.16
,Observed,2.69,2.67,,
,RMSE,in sample,0.20,0.29,0.37
,Error,in sample,4.12%,,
BSL (1953–2002),Forecast,1.01,0.97,0.99,1.04
,Observed,1.00,0.78,,
,RMSE,0.09,0.15,0.22,0.30
,Error,1.00%,24.36%,,
Key: RMSE = root mean squared error.,,,,,