{
    "characterisation": {
        "characterisationAxis": [
            {
                "accuracy": {
                    "statError": {
                        "ErrorRefVal": {
                            "stc:Error2": {
                                "stc:C1": ".000055", 
                                "stc:C2": ".000055"
                            }
                        }, 
                        "flavor": "statistical"
                    }
                }, 
                "axisName": "spatial", 
                "calibrationStatus": "CALIBRATED", 
                "coordsystem": {
                    "id": "TT-ICRS-WAVELENGTH-TOPO", 
                    "xlink:href": "ivo:\/\/STClib\/CoordSys#TT-ICRS-TOPO", 
                    "xlink:type": "simple"
                }, 
                "coverage": {
                    "bounds": {
                        "limits": {
                            "Coord2VecInterval": {
                                "stc:HiLimit2Vec": {
                                    "stc:C1": "190.37601", 
                                    "stc:C2": "11.369167"
                                }, 
                                "stc:LoLimit2Vec": {
                                    "stc:C1": "190.37157", 
                                    "stc:C2": "11.364722"
                                }
                            }, 
                            "coord_system_id": "TT-ICRS-WAVELENGTH-TOPO"
                        }
                    }, 
                    "location": {
                        "coord": {
                            "coord_system_id": "TT-ICRS-WAVELENGTH-TOPO", 
                            "stc:Position2D": {
                                "stc:Name1": "RA", 
                                "stc:Name2": "Dec", 
                                "stc:Value2": {
                                    "stc:C1": "190.37379", 
                                    "stc:C2": "11.366944"
                                }
                            }
                        }
                    }
                }, 
                "independentAxis": "true", 
                "numBins2": {
                    "I1": "16", 
                    "I2": "16"
                }, 
                "regularsamplingStatus": "true", 
                "resolution": {
                    "resolutionRefVal": {
                        "stc:Resolution2": {
                            "stc:C1": "1.4", 
                            "stc:C2": "1.4"
                        }
                    }, 
                    "unit": "arcsec"
                }, 
                "samplingPrecision": {
                    "samplingPrecisionRefVal": {
                        "samplingPeriod": {
                            "stc:C1": "1.0", 
                            "stc:C2": "1.0"
                        }
                    }, 
                    "unit": "arcsec"
                }, 
                "ucd": "pos", 
                "undersamplingStatus": "false", 
                "unit": "deg"
            }, 
            {
                "axisName": "time", 
                "calibrationStatus": "UNCALIBRATED", 
                "coordsystem": {
                    "idref": "TT-ICRS-WAVELENGTH-TOPO"
                }, 
                "coverage": {
                    "location": {
                        "coord": {
                            "coord_system_id": "TT-ICRS-WAVELENGTH-TOPO", 
                            "stc:Time": {
                                "stc:TimeInstant": {
                                    "stc:ISOTime": "2004-05-24T22:23:58"
                                }
                            }
                        }
                    }
                }, 
                "independentAxis": "true", 
                "numBins1": "1", 
                "ucd": "time", 
                "unit": "none"
            }, 
            {
                "accuracy": {
                    "statError": {
                        "ErrorRefVal": {
                            "stc:Error": "0.0001"
                        }, 
                        "flavor": "statistical"
                    }
                }, 
                "axisName": "spectral", 
                "calibrationStatus": "CALIBRATED", 
                "coordsystem": {
                    "idref": "TT-ICRS-WAVELENGTH-TOPO"
                }, 
                "coverage": {
                    "bounds": {
                        "limits": {
                            "CoordScalarInterval": {
                                "stc:HiLimit": "0.56548382", 
                                "stc:LoLimit": "0.4140"
                            }, 
                            "coord_system_id": "TT-ICRS-WAVELENGTH-TOPO"
                        }
                    }, 
                    "location": {
                        "coord": {
                            "coord_system_id": "TT-ICRS-WAVELENGTH-TOPO", 
                            "stc:Spectral": {
                                "stc:Value": "0.4858137"
                            }
                        }
                    }
                }, 
                "independentAxis": "true", 
                "numBins1": "2048", 
                "regularsamplingStatus": "false", 
                "resolution": {
                    "resolutionBounds": {
                        "resolutionLimits1": {
                            "stc:HiLimit": "101.142", 
                            "stc:LoLimit": "48.3233"
                        }
                    }, 
                    "resolutionRefVal": {
                        "stc:Resolution": "78.6162"
                    }, 
                    "unit": "km\/s"
                }, 
                "samplingPrecision": {
                    "samplingPrecisionRefVal": {
                        "samplingPeriod": "40.0000"
                    }, 
                    "unit": "km\/s"
                }, 
                "ucd": "em", 
                "undersamplingStatus": "false", 
                "unit": "um"
            }, 
            {
                "accuracy": {
                    "statError": {
                        "ErrorBounds": {
                            "ErrorLimits1": {
                                "stc:HiLimit": "1.12e-16", 
                                "stc:LoLimit": "5.80e-19"
                            }
                        }, 
                        "ErrorRefVal": {
                            "stc:Error": "5.63e-17"
                        }, 
                        "flavor": "statistical"
                    }
                }, 
                "axisName": "flux", 
                "calibrationStatus": "UNCALIBRATED", 
                "coordsystem": {
                    "id": "UNKNOWN"
                }, 
                "coverage": {
                    "bounds": {
                        "limits": {
                            "CoordScalarInterval": {
                                "stc:HiLimit": "1.1838107e-14", 
                                "stc:LoLimit": "-2.8933970e-15"
                            }, 
                            "coord_system_id": "UNKNOWN"
                        }
                    }, 
                    "location": {
                        "coord": {
                            "coord_system_id": "UNKNOWN", 
                            "stc:ScalarCoordinate": {
                                "stc:Value": "2.3519587e-17"
                            }
                        }
                    }
                }, 
                "independentAxis": "false", 
                "numBins1": "0", 
                "regularsamplingStatus": "true", 
                "ucd": "phot", 
                "undersamplingStatus": "false", 
                "unit": "counts"
            }
        ]
    }
}

La lecture d'un tel fichier en Python par exemple est très aisée :

boch@cds-dev-tb:~/charac/json$ python
Python 2.5.1 (r251:54863, Jul 31 2008, 23:17:40) 
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import json
>>> f = open('MPFS.json')
>>> obj = json.read(f.read())
>>> # affichage du nom du premier axe
... 
>>> obj['characterisation']['characterisationAxis'][0]['axisName']
'spatial'
>>> # affichage d'un element STC
... 
>>> obj['characterisation']['characterisationAxis'][0]['coverage']['location']['coord']['stc:Position2D']['stc:Value2']
{'stc:C1': '190.37379', 'stc:C2': '11.366944'}