anchor.diff:                  "location" : {
                       "latitude": 52.5337,
                       "longitude": 13.37788,
  -                    "timeZoneName" : "Europe/Berlin"
                   },
  -                "relevantStation" : {
  -                    "latitude": 23.43,
  -                    "longitude": -56.23,
  -                    "heightInMeters": -12.43,
  -                    "id": 4711,
  -                    "wmoId": 1231,
  -                    "sourceType" : "DWD",
  -                    "name" : "Berlin Tegel"
  -                },
  -                "observedAt": "2015-08-25T13:00:00+02:00",
  -                "airTemperature": {
  -                    "value" : 29.3,
  -                    "unit" : "DEGREE_CELSIUS"
  -                },
  -                "airPressureInHpa": 1012.9,
  -                "windSpeed": {
  -                    "value" : 7.4,
  -                    "unit" : "METER_PER_SECOND",
  -                    "timeIntervalInMinutes" : -60
  -                },
  -                "windGust" : {
  -                    "value" : 21.6,
  -                    "unit" : "METER_PER_SECOND",
  -                    "timeIntervalInMinutes" : -60
  -                },
  -                "windDirectionInDegree": 274,
  -                "dewPointTemperature": {
  -                    "value" : 15.8,
  -                    "unit" : "DEGREE_CELSIUS"
  -                },
  -                "precipitation": {
  -                    "value" : 0.2,
  -                    "unit" : "MILLIMETER",
  -                    "timeIntervalInMinutes" : -60
  -                },
  -                "relativeHumidityInPercent100based": 63,
  -                "effectiveCloudCoverInOcta": 3,
  -                "visibility": {
  -                    "value" : 0.2,
  -                    "unit" : "KILOMETER"
  -                }
  -            }
  -
  -
  -# Group Forecast
  -
  -## Retrieve weather forecast [/forecast?location={latitudeInDegree,longitudeInDegree}{&speedUnit}{&temperatureUnit}{&precipitationUnit}]
  -
  -#### Example
  -`https://api.weather.mg/forecast?location=53,13`
  -
  -### Forecasted weather for a given *latitude* and *longitude* [GET]
  -
  -Weather forecast for the next 7 days.
  -
  -+ Parameters
  -    + latitudeInDegree: `52.13` (number, required)                - latitude in degree numeric format and in range <-90,90> eg. -85.541, 5.32
  -    + longitudeInDegree: `13.2` (number, required)                - longitude in degree numeric format and in range <-180,180> eg. -123.454, 179.864
  -    + speedUnit: `meters_per_second` (string, optional)           - select which unit for windSpeed, windGust, etc.; valid values: meters_per_second, miles_per_hour, kilometers_per_hour, beaufort
  -    + temperatureUnit: `degree` (string, optional)                - select which unit for airTemperature, etc.; valid values: degree, fahrenheit
  -    + precipitationUnit: `millimeter` (string, optional)          - select which unit for precipitation, etc.; valid values: millimeter, inch
  -
  -+ Response 200 (application/json)
  -
  -    + Headers
  -
  -            X-Request-Calls-Per-Interval: 4712
  -            E-Tag: "a987dff"
  -            Cache-Control: max-age=600
  -
  -    + Body
  -
  -            {
  -                "location" : {
  -                    "latitude": 52.5337,
  -                    "longitude": 13.37788,
  -                    "timeZoneName" : "Europe/Berlin"
  -                },
  -                "forecasts": {
  -                    "hourly" : [
  -                        {
  -                            "validAt": "2015-08-25T14:00:00+02:00",
  -                            "airTemperature": {                        
  -                                "value" : 29,
  -                                "unit" : "DEGREE_CELSIUS"
  -                            },
  -                            "dewPointTemperature": {
  -                                "value" : 15.8,
  -                                "unit" : "DEGREE_CELSIUS"
  -                            },
  -                            "airPressureInHpa": 1012.9,
  -                            "sunshineDurationPastIntervalInMinutes": 23,
  -                            "precipitationPastInterval": {
  -                                "value" : 0,
  -                                "unit" : "MILLIMETER"
  -                            },
  -                            "precipitationProbabilityInPercent100based": 0,
  -                            "averageWindSpeed": {
  -                                "value" : 7.48,
  -                                "unit" : "METER_PER_SECOND",
  -                                "timeIntervalInMinutes" : -60  
  -                            },
  -                            "windGust" : {                     
  -                                "value" : 21.6,
  -                                "unit" : "METER_PER_SECOND",
  -                                "timeIntervalInMinutes" : -60    
  -                            },
  -                            "windDirectionInDegree": 274,
  -                            "effectiveCloudCoverInOcta": 3
  -                        }
  -                    ]
  +                "warningId": "1234-5678",
  +                "issueAt": "2016-08-03T00:00:00+02:00",
  +                "validAt": "2016-08-03T00:00:00+02:00",
  +                "warningSeverity": "HIGH",
  +                "affectedRegion": {
  +                    "name": "London"
                   }
               }
   
  
positive.code:             X-Request-Calls-Per-Interval: 4711
              E-Tag: "x234dff"
              Cache-Control: max-age=3628800
  
      + Body
  
  
negative.code: Weather API
  =============================
  
  Do you want to send [feedback](https://meteogroup.zendesk.com/hc/en-gb/requests/new?ticket_form_id=64951)?
  
  [Roadmap for Weather API](https://github.com/MeteoGroup/weather-api/tree/roadmap)
  