anchor.diff:                  "pressureTendencyCode": 1
                 },
                 {
  -                "locatedAt": [
  -                  -2.2323,
  -                  47.4593
  -                ],
  -                "meteoGroupStationId": "3007237",
  -                "meteoGroupStationName": "Pleucadeuc",
  -                "stationLocation": [
  -                  -2.2323,
  -                  47.4593
  -                ],
  +                "locatedAt": [ -2.2323, 47.4593 ],
  +                "meteoGroupStationId": "3007237",
  +                "meteoGroupStationName": "Pleucadeuc",
  +                "stationLocation": [ -2.2323, 47.4593 ],
                   "stationTimeZoneName": "Europe/Prague",
                   "observedFrom": "2016-10-14T21:00:00Z",
                   "observedUntil": "2016-10-15T09:00:00Z",
                   "observedPeriod": "PT12H",
  -                "temperatureMaxInDegreeCelsius": 2.5,
  +                "temperatureMaxInCelsius": 2.5,
                   "temperatureMaxInFahrenheit": 36.5,
  -                "temperatureMinInDegreeCelsius": 2.8,
  -                "temperatureMinInFahrenheit": 37.04
  -              },
  -              {
  -                "locatedAt": [
  -                  -2.2323,
  -                  47.4593
  -                ],
  -                "meteoGroupStationId": "3007237",
  -                "meteoGroupStationName": "Pleucadeuc",
  -                "stationLocation": [
  -                  -2.2323,
  -                  47.4593
  -                ],
  +                "temperatureMaxInKelvin" : 275.65,
  +                "temperatureMinInCelsius": 2.8,
  +                "temperatureMinInFahrenheit": 37.04,
  +                "temperatureMinInKelvin" : 275.94998
  +              },
  +              {
  +                "locatedAt": [ -2.2323, 47.4593 ],
  +                "meteoGroupStationId": "3007237",
  +                "meteoGroupStationName": "Pleucadeuc",
  +                "stationLocation": [ -2.2323, 47.4593 ],
                   "stationTimeZoneName": "Europe/Prague",
                   "observedFrom": "2016-10-14T09:00:00Z",
                   "observedUntil": "2016-10-15T09:00:00Z",
                   "observedPeriod": "PT24H",
                   "precipitationAmountInMillimeter": 0.1,
                   "precipitationAmountInInch": 0.004,
  -                "sunshineDurationInHours": 12
  +                "sunshineDurationInHours": 12,
  +                "sunshineDurationInMinutes": 720.0
                 }
               ]
             }
  
positive.code:                 "pressureTendencyCode": 1
                },
                {
                  "locatedAt": [
                    -2.2323,
                    47.4593
                  ],
                  "meteoGroupStationId": "3007237",
                  "meteoGroupStationName": "Pleucadeuc",
                  "stationLocation": [
                    -2.2323,
                    47.4593
                  ],
                  "stationTimeZoneName": "Europe/Prague",
                  "observedFrom": "2016-10-14T20:00:00Z",
                  "observedUntil": "2016-10-15T08:00:00Z",
                  "observedPeriod": "PT12H",
                  "temperatureMaxInDegreeCelsius": 3.7,
                  "temperatureMaxInFahrenheit": 38.66,
                  "temperatureMinInDegreeCelsius": 3.1,
                  "temperatureMinInFahrenheit": 37.58
                },
                {
                  "locatedAt": [
                    -2.2323,
                    47.4593
                  ],
                  "meteoGroupStationId": "3007237",
                  "meteoGroupStationName": "Pleucadeuc",
                  "stationLocation": [
                    -2.2323,
                    47.4593
                  ],
                  "stationTimeZoneName": "Europe/Prague",
                  "observedFrom": "2016-10-14T08:00:00Z",
                  "observedUntil": "2016-10-15T08:00:00Z",
                  "observedPeriod": "PT24H",
                  "precipitationAmountInMillimeter": 0.2,
                  "precipitationAmountInInch": 0.008,
                  "sunshineDurationInHours": 12
                },
                {
                  "locatedAt": [
                    -2.2323,
                    47.4593
                  ],
                  "meteoGroupStationId": "3007237",
                  "meteoGroupStationName": "Pleucadeuc",
                  "stationLocation": [
                    -2.2323,
                    47.4593
                  ],
                  "stationTimeZoneName": "Europe/Prague",
                  "observedFrom": "2016-10-15T09:00:00Z",
                  "observedUntil": "2016-10-15T09:00:00Z",
                  "observedPeriod": "PT0S",
                  "airTemperatureInCelsius": 2.6,
                  "airTemperatureInFahrenheit": 36.68,
                  "feelsLikeTemperatureInCelsius": 3.1,
                  "feelsLikeTemperatureInFahrenheit": 37.58,
                  "airPressureInHectoPascal": 1005.5,
                  "windSpeedInMeterPerSecond": 0.5144445,
                  "windSpeedInKilometerPerHour": 1.852,
                  "windSpeedInMilePerHour": 1.1507794,
                  "windSpeedInBeaufort": 1,
                  "windSpeedInKnot": 0.99999976,
                  "windDirectionInDegree": 230,
                  "dewPointTemperatureInCelsius": 2.3,
                  "dewPointTemperatureInFahrenheit": 36.14,
                  "relativeHumidityInPercent": 98,
                  "effectiveCloudCoverInOcta": 5,
                  "visibilityInMeter": 2000,
                  "visibilityInKilometers": 2,
                  "visibilityInNauticalMile": 1.0799999,
                  "visibilityInStatuteMile": 1.2427424,
                  "weatherCode": "2"
                },
                {
                  "locatedAt": [
                    -2.2323,
                    47.4593
                  ],
                  "meteoGroupStationId": "3007237",
                  "meteoGroupStationName": "Pleucadeuc",
                  "stationLocation": [
                    -2.2323,
                    47.4593
                  ],
                  "stationTimeZoneName": "Europe/Prague",
                  "observedFrom": "2016-10-15T08:00:00Z",
                  "observedUntil": "2016-10-15T09:00:00Z",
                  "observedPeriod": "PT1H",
                  "windGustInMeterPerSecond": 0.97744447,
                  "windGustInKilometerPerHour": 3.5188,
                  "windGustInMilePerHour": 2.1864808,
                  "windGustInBeaufort": 1,
                  "windGustInKnot": 1.8999995,
                  "precipitationAmountInMillimeter": 0,
                  "precipitationAmountInInch": 0
                },
                {
                  "locatedAt": [
                    -2.2323,
                    47.4593
                  ],
                  "meteoGroupStationId": "3007237",
                  "meteoGroupStationName": "Pleucadeuc",
                  "stationLocation": [
                    -2.2323,
                    47.4593
                  ],
                  "stationTimeZoneName": "Europe/Prague",
                  "observedFrom": "2016-10-15T06:00:00Z",
                  "observedUntil": "2016-10-15T09:00:00Z",
  
negative.code: 
  Here are relationship between observation periods and fields appropriately:
  
  - **PT0S** -    airTemperatureInCelsius, airTemperatureInFahrenheit, airTemperatureInKelvin, feelsLikeTemperatureInCelsius, feelsLikeTemperatureInFahrenheit,
                  feelsLikeTemperatureInKelvin, airPressureInHectoPascal, windSpeedInMeterPerSecond, windSpeedInKilometerPerHour, windSpeedInMilesPerHour,
                  windSpeedInBeaufort, windSpeedInKnots, windDirectionInDegree, dewPointTemperatureInCelsius, dewPointTemperatureInFahrenheit, dewPointTemperatureInKelvin,
                  relativeHumidityInPercent, effectiveCloudCoverInOcta, visibilityInMeter, visibilityInKilometer, visibilityInNauticalMile,visibilityInStatuteMile, weatherCode
  - **PT1H** -    windGustInMeterPerSecond, windGustInKilometerPerHour, windGustInMilesPerHour, windGustInBeaufort, windGustInKnots, precipitationAmountInMillimeter, precipitationAmountInInch
  - **PT3H** -    pressureTendencyCode, pressureChangeInHectoPascal
  - **PT12H** -   temperatureMaxInCelsius, temperatureMaxInFahrenheit, temperatureMaxInKelvin, temperatureMinInCelsius, temperatureMinInFahrenheit, temperatureMinInKelvin
  - **PT24H** -   precipitationAmountInMillimeter, precipitationAmountInInch, sunshineDurationInHours, sunshineDurationInMinutes
  
  + Parameters
      + stationIds: `3007237` (string, optional) - station ids; can be several stations separated by comma
  