anchor.diff:                  visibilityInNauticalMile,visibilityInStatuteMile, weatherCode, weatherCodeTraditional,snowDepthInCentimeter,snowDepthInInch, waterTemperatureInCelsius, waterTemperatureInFahrenheit,
                   waterTemperatureInKelvin, totalWaveHeightInMeter, totalWaveHeightInFeet, totalWavePeriodInSecond, seaHeightInMeter, seaHeightInFeet, seaPeriodInSecond,
                   mediumCloudCoverInOcta,heightOfMediumCloudsInMeter,heightOfHighCloudsInMeter,highCloudCoverInOcta,shipCallSign,iCAOIdentifier,lowCloudCoverInOcta,heightOfLowCloudsInMeter,
  -                directionOfFirstSwellInDegree,periodOfFirstSwellInSeconds,heightOfFirstSwellInMeters,heightOfFirstSwellInFeet,directionOfSecondSwellInDegree,periodOfSecondSwellInSeconds,heightOfSecondSwellInMeters,heightOfSecondSwellInFeet
  +                directionOfFirstSwellInDegree,periodOfFirstSwellInSeconds,heightOfFirstSwellInMeters,heightOfFirstSwellInFeet,directionOfSecondSwellInDegree,periodOfSecondSwellInSeconds,heightOfSecondSwellInMeters,heightOfSecondSwellInFeet,gapFillingInfo
   
   - **PT1H** -    windGustInMeterPerSecond, windGustInKilometerPerHour, windGustInMilesPerHour, windGustInBeaufort, windGustInKnots, precipitationAmountInMillimeter,
  -                precipitationAmountInInch, freshSnowfallInCentimeter, freshSnowfallInInch, pressureTendencyDescription, pressureTendencyCode
  +                precipitationAmountInInch, freshSnowfallInCentimeter, freshSnowfallInInch, pressureTendencyDescription, pressureTendencyCode, gapFillingInfo
   - **PT3H** -    pressureTendencyDescription, pressureTendencyCode, pressureChangeInHectoPascal, precipitationAmountInMillimeter,precipitationAmountInInch, maxWindGustInMeterPerSecond, maxWindGustInKilometerPerHour,
                   maxWindGustInMilesPerHour, maxWindGustInBeaufort, maxWindGustInKnots, shipCourseText, shipSpeedRangeInKnots
   - **PT6H** -    precipitationAmountInMillimeter,precipitationAmountInInch, maxWindGustInMeterPerSecond, maxWindGustInKilometerPerHour, maxWindGustInMilesPerHour, maxWindGustInBeaufort,
  
positive.code:                 "precipitationAmountInInch": 0.004
                }
              ]
            }
  
  ### Retrieve weather observation by BUOY ID [GET]. Please be aware that querying observation by BUOY|SHIP|PLATFORM is totaly the same as querying observations by meteoGroupStationIds.
  
negative.code: 
  # Group Observation
  
  ## Retrieve weather observation [/search?locatedAt={locatedAt}&meteoGroupStationIds={stationIds}&fields={fields}&observedFrom={observedFrom}&observedUntil={observedUntil}&observedPeriod={observedPeriod}&gapFilling={gapFilling}]
  
  For any requested location a relevant station is searched.
  The searching algorithm stops at a maximum distance of 100km (between requested location and station)
  