In situ obs   GOSAT obs
90-60S     land       0.004          --
          ocean          --          --
       combined       0.004          --
60-30S     land      -0.004      -0.020
          ocean       0.001      -0.018
       combined      -0.002      -0.019
 30-0S     land      -0.108      -0.033
          ocean      -0.022      -0.030
       combined      -0.052      -0.032
 0-30N     land      -0.091      -0.050
          ocean      -0.075      -0.032
       combined      -0.077      -0.045
30-60N     land      -0.124      -0.022
          ocean      -0.075       0.006
       combined      -0.120      -0.021
60-90N     land      -0.061       0.004
          ocean      -0.047          --
       combined      -0.057       0.004
Global     land      -0.111      -0.031
          ocean      -0.064      -0.028
       combined      -0.097      -0.030