Airline

Pollutant

N. of Obs.

Mean

Std. Dev.

Min.

Max.

CV

CO (tons)

53

8268.350

9963.030

11.979

54029.810

1.205

NO_X (tons)

53

2277.850

3401.790

0.266

17043.920

1.493

PM (tons)

53

180.919

211.983

0.272

1145.140

1.172

SO₂ (tons)

53

239.642

351.130

0.058

1866.450

1.465

VOCs (tons)

53

625.677

1018.070

0.465

6144.000

1.627

Vessel

Pollutant

N. of Obs.

Mean

Std. Dev.

Min.

Max.

CV

CO (tons)

42

2065.370

4053.190

0.005

23719.810

1.962

NO_X (tons)

42

12771.610

23159.440

0.027

132292.350

1.813

PM (tons)

42

645.534

1074.950

0.001

5677.870

1.665

SO₂ (tons)

42

3403.410

5582.650

0.002

23870.760

1.640

VOCs (tons)

42

342.995

564.392

0.001

3110.910

1.645

Rail

Pollutant

N. of Obs.

Mean

Std. Dev.

Min.

Max.

CV

CO (tons)

50

2398.720

2082.860

8.592

10858.510

0.868

NO_X (tons)

50

16913.600

14342.040

87.267

74404.650

0.848

PM (tons)

50

551.335

476.072

2.148

2484.400

0.863

SO₂ (tons)

50

215.729

273.284

0.607

1736.870

1.267

VOCs (tons)

50

883.754

763.524

3.222

3760.480

0.864

Truck

Pollutant

N. of Obs.

Mean

Std. Dev.

Min.

Max.

CV

CO (tons)

50

18677.270

20442.930

918.432

99166.890

1.095

NO_X (tons)

50

63501.130

69821.420

2577.990

363276.210

1.100

PM (tons)

50

3524.960

3706.050

159.779

18699.870

1.051

SO₂ (tons)

50

92.377

92.783

3.666

467.146

1.004

VOCs (tons)

50

4214.540

4634.510

225.378

24122.660

1.100