anchor.diff:    15  missing_value
     
   The 'shipCourseText' returns one of the following values: "not moving", "NE", "E", "SE", "S", "SW", "W", "NW", "N", "unknown".
  -The 'shipSpeedInKnots' returns one of the following values: "0", "1-5", "6-10", "11-15", "16-20", "21-25", "26-30", "31-35", "36-40", ">40", "unknown".
  +The 'shipSpeedRangeInKnots' returns one of the following values: "0", "1-5", "6-10", "11-15", "16-20", "21-25", "26-30", "31-35", "36-40", ">40", "unknown".
   
   *Fields mapping*
   
  
positive.code:                 "feelsLikeTemperatureInCelsius": 3.9,
                  "feelsLikeTemperatureInFahrenheit": 39.02,
                  "feelsLikeTemperatureInKelvin": 277.05,
                  "airPressureInHectoPascal": 1005.5,
                  "windSpeedInMeterPerSecond": 0.5144445,
                  "windSpeedInKilometerPerHour": 1.852,
                  "windSpeedInMilesPerHour": 1.1507794,
  
negative.code:               "feelsLikeTemperatureInCelsius": 11.2,
                "feelsLikeTemperatureInFahrenheit": 52.16,
                "feelsLikeTemperatureInKelvin": 284.35,
                "airPressureAtSeaLevelInHectoPascal": 1019.7,
                "windSpeedInMeterPerSecond": 7.2,
                "windSpeedInKilometerPerHour": 25.919998,
                "windSpeedInMilesPerHour": 16.10594,
  