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                        "nutation": [
                            {
                                "source": "BulletinA",
                                "type": "",
                                "dPsi": "",
                                "sigma_dPsi": "",
                                "dEpsilon": "",
                                "sigma_dEpsilon": ""
                            },
                            {
                                "source": "BulletinB",
                                "type": "",
                                "dPsi": "",
                                "dEpsilon": ""
                            }
                        ]
                    }
                }
            ]
        }
    }
}