anchor.diff:                  "feelsLikeTemperatureInCelsius": 14.1,
                   "feelsLikeTemperatureInFahrenheit": 57.38,
                   "feelsLikeTemperatureInKelvin": 287.25,
  -                "airPressureInHectoPascal": 1005.5,
  +                "airPressureAtSeaLevelInHectoPascal": 1005.5,
                   "windSpeedInMeterPerSecond": 0.5144445,
                   "windSpeedInKilometerPerHour": 1.852,
                   "windSpeedInMilesPerHour": 1.1507794,
  
positive.code:                 "feelsLikeTemperatureInCelsius": 3.1,
                  "feelsLikeTemperatureInFahrenheit": 37.58,
                  "feelsLikeTemperatureInKelvin": 276.25,
                  "airPressureInHectoPascal": 1005.5,
                  "windSpeedInMeterPerSecond": 0.5144445,
                  "windSpeedInKilometerPerHour": 1.852,
                  "windSpeedInMilesPerHour": 1.1507794,
  
negative.code: - **PT1H** -    windGustInMeterPerSecond, windGustInKilometerPerHour, windGustInMilesPerHour, windGustInBeaufort, windGustInKnots, precipitationAmountInMillimeter,
                  precipitationAmountInInch, freshSnowfallInCentimeter, freshSnowfallInInch, pressureTendencyDescription, pressureTendencyCode
  - **PT3H** -    pressureTendencyDescription, pressureTendencyCode, pressureChangeInHectoPascal, precipitationAmountInMillimeter,precipitationAmountInInch, maxWindGustInMeterPerSecond, maxWindGustInKilometerPerHour,
                  maxWindGustInMilesPerHour, maxWindGustInBeaufort, maxWindGustInKnots, shipCourseText, shipSpeedRangeInKnots
  - **PT6H** -    precipitationAmountInMillimeter,precipitationAmountInInch, maxWindGustInMeterPerSecond, maxWindGustInKilometerPerHour, maxWindGustInMilesPerHour, maxWindGustInBeaufort,
                  maxWindGustInKnots, pressureTendencyDescription, pressureTendencyCode, pressureChangeInHectoPascal, pastWeatherCode, pastWeatherDescription
  - **PT12H** -   temperatureMaxInCelsius, temperatureMaxInFahrenheit, temperatureMaxInKelvin, temperatureMinInCelsius, temperatureMinInFahrenheit, temperatureMinInKelvin,
  