anchor.diff:     + the highest value of all reported `maxAirTemperatureInCelsius` within that period (`PT12H`)
    + for max wind speed calculation `PT0S` period is used
    + for max wind gusts speed calculation `PT1H` period is used
  - + for max sunshine duration and max precipitation amount `PT24H` period is used. The source values for calculation fetches from the next day after relevant, that's why these parameters are never present in the current day but for the previous days. 
  + + for max sunshine duration and max precipitation amount `PT24H` period is used. The source values for calculation fetches from the next day after relevant, that's why these parameters are never present in the current day but for the previous days.
   
   # Observation Statistics
   
  
positive.code:    7  decreasing                              | atmospheric pressure now lower than 3 hours ago
     8  steady_or_increasing_then_decreasing    |
    15  missing_value
    
  The 'shipCourseText' returns one of the following values: "not moving", "NE", "E", "SE", "S", "SW", "W", "NW", "N", "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".
  
  *Gap filling*
  
  GapFilling allows to gap fill missing observations with forecast data from MOSI for following parameters: 
  + airPressureAtSeaLevelInHectoPascal
  + airTemperatureInCelsius
  + airTemperatureInFahrenheit
  
negative.code: ### Retrieve weather observation by given bounding box and the type of searching stations either BUOY|SHIP|PLATFORM
  This endpoint allows you querying observation from moving station (BUOY|SHIP|PLATFORM) by bounding box
  
  ### Example
  `https://point-observation.weather.mg/search?observedFrom=2017-10-19T00:00:00Z&observedUntil=2017-10-19T10:00:00Z&observedPeriod=PT0S,PT1H,PT3H,PT12H,PT24H&fields=airTemperatureInCelsius,meteoGroupStationId&isType=SHIP&locationWithin=[-10,80],[10,5]`
  
  + Parameters
  