{
    "name": {
        "en-US": "HRV SDNN (ms)",
        "de-DE": "HRV SDNN (ms)"
    },
    "description": {
        "en-US": "Standard deviation of normal-to-normal (NN) intervals over the window, in milliseconds.",
        "de-DE": "Standardabweichung der NN-Intervalle über das Fenster, in Millisekunden."
    },
    "exactMatch": [
        "https://xapi.elearn.rwth-aachen.de/definitions/ppm/extensions/result/hrvSdnnMs"
    ]
}