Table 4 Uncertainty results for terminal A.

From: Evaluation of CO2 emissions and energy use with different container terminal layouts

Terminal A

Mean

SD

Uncertainty

%Relative uncertainty

R square

Quay crane

782.8

80.4

23.2

3.0

0.74

Rubber-tired gantry crane

933.6

81.0

23.4

2.5

0.80

Terminal truck

401.8

40.5

11.7

2.9

0.93

Reach stacker

12.5

3.4

1.0

7.9

0.57

Side loader

12.2

4.4

1.3

10.3

0.35