In situ obs   GOSAT obs
90-60S     land       0.103          --
          ocean          --          --
       combined       0.103          --
60-30S     land       0.115       0.098
          ocean       0.119       0.121
       combined       0.117       0.103
 30-0S     land       0.034       0.069
          ocean       0.099       0.106
       combined       0.077       0.082
 0-30N     land      -0.039       0.030
          ocean      -0.057       0.058
       combined      -0.055       0.037
30-60N     land      -0.202      -0.012
          ocean      -0.155       0.026
       combined      -0.198      -0.011
60-90N     land      -0.131      -0.024
          ocean      -0.126          --
       combined      -0.129      -0.024
Global     land      -0.166       0.029
          ocean      -0.049       0.089
       combined      -0.131       0.042