anchor.diff:                  "visibilityInKilometer": 2,
                   "visibilityInNauticalMile": 1.0799999,
                   "visibilityInStatuteMile": 1.2427424,
  -                "weatherCode": "2"
  +                "weatherCode": "2",
  +                "weatherCodeTraditional": "2"
                 },
                 {
                   "locatedAt": [ -2.2323, 47.4593 ],
  
positive.code: - **PT0S** -    airTemperatureInCelsius, airTemperatureInFahrenheit, airTemperatureInKelvin, feelsLikeTemperatureInCelsius, feelsLikeTemperatureInFahrenheit,
                  feelsLikeTemperatureInKelvin, airPressureInHectoPascal, windSpeedInMeterPerSecond, windSpeedInKilometerPerHour, windSpeedInMilesPerHour,
                  windSpeedInBeaufort, windSpeedInKnots, windDirectionInDegree, dewPointTemperatureInCelsius, dewPointTemperatureInFahrenheit, dewPointTemperatureInKelvin,
                  relativeHumidityInPercent, effectiveCloudCoverInOcta, visibilityInMeter, visibilityInKilometer, visibilityInNauticalMile,visibilityInStatuteMile, weatherCode
  - **PT1H** -    windGustInMeterPerSecond, windGustInKilometerPerHour, windGustInMilesPerHour, windGustInBeaufort, windGustInKnots, precipitationAmountInMillimeter, precipitationAmountInInch
  - **PT3H** -    pressureTendencyCode, pressureChangeInHectoPascal
  - **PT12H** -   temperatureMaxInCelsius, temperatureMaxInFahrenheit, temperatureMaxInKelvin, temperatureMinInCelsius, temperatureMinInFahrenheit, temperatureMinInKelvin
  
negative.code:                 "visibilityInKilometer": 2.0,
                  "visibilityInNauticalMile": 1.0799999,
                  "visibilityInStatuteMile": 1.2427424,
                  "weatherCode": "2",
                  "weatherCodeTraditional": "2"
                },
                {
                  "meteoGroupStationId": "3007237",
  