Year

Observation (m)

Prediction (m)

Absolute error/m

Relative error/%

2001

12.94

12.92805

−0.01195

0.09

2002

13.71

13.66407

−0.04593

0. 34

2003

13.78

13.76993

−0.01007

0. 07

2004

13.09

12.99656

−0.09344

0.07

2005

13.99

14.10596

0.115963

0. 83

2006

14.02

13.98873

−0.03127

0. 22

2007

14.21

14.20163

−0.00837

0. 06

2008

14.41

14.58063

0.170628

1.18

2009

14.28

14.32972

0.049723

0. 35

2010

15.23

15.02816

−0.20184

1.33