Station

Lat.

Ave CO₂

(ppmv)

Max Spread

(ppmv)

Max Spread

(Percent)

Ave Rise/yr

(ppmv)

Ave Rise/yr

(Percent)

South Pole

−90˚S

369

3.02

0.81%

1.66

0.45%

Palmer Station

−64˚S

365

3.68

1.00%

1.69

0.46%

Ushuaia, Argentina

−54.8˚S

371

4.12

1.11%

1.79

0.48%

Cape Grim

−41˚S

363

3.51

0.96%

1.68

0.46%

Pacific Ocean

−30˚S

358

4.08

1.14%

1.57

0.44%

Easter Island

−27˚S

366

4.49

1.23%

1.86

0.51%

Pacific Ocean

−25˚S

357

3.95

1.11%

1.66

0.46%

Pacific Ocean

−20˚S

356

2.75

0.77%

1.64

0.46%

Somoa

−14.3˚S

358

3.01

0.84%

1.55

0.43%

Pacific Ocean

−10˚S

357

1.32

0.37%

1.59

0.44%

Pacific Ocean

0˚

359

1.37

0.38%

1.5

0.41%

Christmas Island

1.87˚N

358

2.28

0.63%

1.64

0.46%

Pacific Ocean

10˚N

360

6

1.67%

1.73

0.48%

Barbados

13.1˚N

365

7.29

1.99%

1.69

0.47%

Pacific Ocean

15˚N

360

6.19

1.71%

1.66

0.46%

Mauna Loa

19.5˚N

365

6.22

1.7%

1.69

0.46%

Pacific Ocean

25˚N

366

15.1

4.1%

1.68

0.45%

Midway

28.2˚N

368

14.1

3.8%

1.75

0.47%

Azores

38.7˚N

368

16

4.4%

1.70

0.46%

Cold Bay, Alaska

55.2˚N

373

20.2

5.4%

1.7

0.46%

Barrows, Alaska

71.3˚N

376

20.8

5.5%

1.6

0.43%

Alert, Canada

82.4˚N

376

20.193

5.4%

1.77

0.47%