groops griddedData version=20200123
 1          2  6.378137000000000000e+06  6.356752314140356146e+06         33
# longitude [deg]           latitude [deg]            height [m]                unit areas [-]             data0                     data1                   
# ===========================================================================================================================================================
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  8.686263389999998807e+00  4.888265460000000218e+01  3.700319999996572733e+02  1.000000000000000000e+00  9.809028800000000103e+00  1.000000000000000087e-07
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  1.006414468999999912e+01  4.883460406999999748e+01  4.911960000004619360e+02  1.000000000000000000e+00  9.808447510000000591e+00  1.000000000000000087e-07
  9.171528099999999739e+00  4.877953099999999864e+01  3.032199999997392297e+02  1.000000000000000000e+00  9.808751609999999843e+00  1.000000000000000087e-07
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  9.603640049999997430e+00  4.879275110999999754e+01  3.141069999998435378e+02  1.000000000000000000e+00  9.808789329999999751e+00  1.000000000000000087e-07
  1.014676368999999845e+01  4.867291526000001767e+01  6.047420000005513430e+02  1.000000000000000000e+00  9.808100550000000695e+00  1.000000000000000087e-07
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  8.833332060000000041e+00  4.852109386999999430e+01  5.068909999998286366e+02  1.000000000000000000e+00  9.808189790000001906e+00  1.000000000000000087e-07
  9.288245990000000063e+00  4.854219994999999699e+01  4.010090000005438924e+02  1.000000000000000000e+00  9.808370250000001178e+00  1.000000000000000087e-07
  8.408027269999999831e+00  4.846354337999999728e+01  7.678790000006556511e+02  1.000000000000000000e+00  9.807628530000000566e+00  1.000000000000000087e-07
  8.410416980000000819e+00  4.846269231000000133e+01  7.767600000007078052e+02  1.000000000000000000e+00  9.807609640000000795e+00  1.000000000000000087e-07
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  7.877630520000001191e+00  4.833867379000000852e+01  2.196119999988004565e+02  1.000000000000000000e+00  9.808753310000000170e+00  1.000000000000000087e-07
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  8.232636010000000226e+00  4.812769161999999312e+01  7.564230000013485551e+02  1.000000000000000000e+00  9.807296239999999443e+00  1.000000000000000087e-07
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  9.252549159999999162e+00  4.801908992000000609e+01  6.558789999997243285e+02  1.000000000000000000e+00  9.807058740000000441e+00  1.000000000000000087e-07
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  8.811865380000000414e+00  4.797875376000000358e+01  7.191080000000074506e+02  1.000000000000000000e+00  9.807112460000000809e+00  1.000000000000000087e-07
  9.751634269999998494e+00  4.792463051999999379e+01  6.435410000011324883e+02  1.000000000000000000e+00  9.806790600000001135e+00  1.000000000000000087e-07
  8.835107739999997989e+00  4.776649124000000057e+01  4.879550000000745058e+02  1.000000000000000000e+00  9.807188590000000872e+00  1.000000000000000087e-07
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  8.217046340000001337e+00  4.762106168999999767e+01  3.855210000006482005e+02  1.000000000000000000e+00  9.807423050000000586e+00  1.000000000000000087e-07