anchor.diff:     + the lowest value of all reported “minAirTemperatureInCelsius” within that period ("PT12H")
    + for max temperature in a certain time range, use the highest value from these two values:
      + the highest values of the hourly “airTemperatureInCelsius” values ("PT0S")
  -   + the highest value of all reported “maxAirTemperatureInCelsius” within that period ("PT12H").+   + the highest value of all reported “maxAirTemperatureInCelsius” within that period ("PT12H").
  
positive.code:                 averageWindSpeedInKnots,averageWindSpeedInMilesPerHour,averageWindSpeedInBeaufort,averageWindSpeedInKilometerPerHour
  
  The "weatherCode" parameter refers to the WMO code table "0 20 003 - Present weather".
  The mostLikelyHighAirTemperature equals maxAirTemperature plus airTemperatureError.
  The mostLikelyLowAirTemperature equals minAirTemperature minus airTemperatureError.
  
  
negative.code: - **PT24H** -   precipitationAmountInMillimeter, precipitationAmountInInch, sunshineDurationInHours, sunshineDurationInMinutes
  
  The "weatherCode" parameter refers to the WMO code table "0 20 003 - Present weather".
  The "weatherCodeTraditional" parameter refers to the WMO code table "4677".
  
  + Parameters
      + stationIds: `3007237` (string, optional) - station ids; can be several stations separated by comma
  