anchor.diff:              Content-Type: application/json
               x-amzn-RequestId: fbf51991-c2b2-11e6-bbb7-0153a49228b7
   
  -    + Body
  -
  -           {
  -             "isoCountryCode": "UK",
  -             "observedUntil": "2017-01-13T10:35:31Z",
  -             "observedFrom": "2017-01-06T10:35:31Z",
  -             "minAirTemperatureInCelsius": -9.2,
  -             "minWeatherObservations": [
  -               {
  -                 "meteoGroupStationId": "3065",
  -                 "meteoGroupStationName": "Cairngorm",
  -                 "observedAt": "2017-01-13T00:00:00Z"
  -               },
  -               {
  -                 "meteoGroupStationId": "3065",
  -                 "meteoGroupStationName": "Cairngorm",
  -                 "observedAt": "2017-01-13T06:00:00Z"
  -               },
  -               {
  -                 "meteoGroupStationId": "3065",
  -                 "meteoGroupStationName": "Cairngorm",
  -                 "observedAt": "2017-01-13T09:00:00Z"
  -               }
  -             ],
  -             "maxAirTemperatureInCelsius": 14.1,
  -             "maxWeatherObservations": [
  -               {
  -                 "meteoGroupStationId": "3313",
  -                 "meteoGroupStationName": "Rhyl",
  -                 "observedAt": "2017-01-11T09:00:00Z"
  -               }
  -             ],
  -			 "maxWindSpeedInKnots": 10.1,
  -			 "maxWindSpeedObservations": [
  -               {
  -                 "meteoGroupStationId": "43081",
  -                 "meteoGroupStationName": "Baskervilles",
  -                 "observedAt": "2017-01-13T00:00:00Z"
  -               },
  -               {
  -                 "meteoGroupStationId": "30651",
  -                 "meteoGroupStationName": "Leatherhead",
  -                 "observedAt": "2017-01-13T06:00:00Z"
  -               }
  -			 ],
  -             "maxWindGustInKnots": 53.06694,
  -             "maxWindGustObservations": [
  -                 {
  -                     "meteoGroupStationId": "3809",
  -                     "meteoGroupStationName": "Culdrose",
  -                     "observedAt": "2017-03-05T15:00:00Z"
  -                 }
  -             ],
  -             "maxSunshineDurationInMinutes": 720,
  -             "maxSunshineDurationObservations": [
  -                 {
  -                     "meteoGroupStationId": "3002",
  -                     "meteoGroupStationName": "Baltasound",
  -                     "observedAt": "2017-03-03T00:00:00Z"
  -                 }
  -             ]
  -           }
  -
  -Here `observedUntil` and `observedFrom` fields represent period that has been used to recalculate extreme values.
  -Because extreme values for UK recalculate every hour, difference between `observedUntil` value and time of the request can be up to 1 hour.
  -The fields `minWeatherObservations`, `maxWeatherObservations`, `maxWindSpeedObservations`, `maxWindGustObservations` and `maxSunshineDurationObservations` are arrays that contain all the observations when extreme value has been observed.
  +	+ Parameters
  +        + isoCountryCode: `UK` (string, required) - the ISO code of the country, for which extreme values should be returned; currenlty the UK only is supported
  +
  +	+ Body
  +
  +      {
  +        "extremes": [
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-01T00:00:00Z",
  +            "observedUntil": "2017-03-07T10:35:31Z",
  +            "minAirTemperatureInCelsius": -11.5,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-03T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-03T06:00:00Z"
  +              }      ],
  +            "maxAirTemperatureInCelsius": 20.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-04T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 12.4,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-06T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-06T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 20.1,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-06T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 720,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-03T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-01T00:00:00Z",
  +            "observedUntil": "2017-03-02T00:00:00Z",
  +            "minAirTemperatureInCelsius": -9.5,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-01T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-01T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 12.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-01T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 5.1,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-01T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-01T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 6.2,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-01T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 650,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-01T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-02T00:00:00Z",
  +            "observedUntil": "2017-03-03T00:00:00Z",
  +            "minAirTemperatureInCelsius": -7.2,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-02T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-02T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 11.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-02T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 10.9,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-02T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-02T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 18.1,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-02T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 665,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-02T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-03T00:00:00Z",
  +            "observedUntil": "2017-03-04T00:00:00Z",
  +            "minAirTemperatureInCelsius": -11.5,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-03T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-03T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 7.0,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-03T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 10.8,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-03T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-03T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 13.1,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-03T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 720,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-03T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-04T00:00:00Z",
  +            "observedUntil": "2017-03-05T00:00:00Z",
  +            "minAirTemperatureInCelsius": 1.3,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-04T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-04T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 20.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-04T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 7.4,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-04T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-04T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 9.3,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-04T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 700,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-04T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-05T00:00:00Z",
  +            "observedUntil": "2017-03-06T00:00:00Z",
  +            "minAirTemperatureInCelsius": -3.2,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-05T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-05T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 11.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-05T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 8.9,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-05T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-05T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 11.0,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-05T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 555,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-05T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-06T00:00:00Z",
  +            "observedUntil": "2017-03-07T00:00:00Z",
  +            "minAirTemperatureInCelsius": -7.2,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-06T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-06T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 13.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-06T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 12.4,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-06T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-06T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 20.1,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-06T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 333,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-06T00:00:00Z"
  +                }
  +            ]
  +          },
  +          {
  +            "isoCountryCode": "UK",
  +            "observedFrom": "2017-03-07T00:00:00Z",
  +            "observedUntil": "2017-03-07T10:35:31Z",
  +            "minAirTemperatureInCelsius": -5.2,
  +            "minWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-07T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "3065",
  +                "meteoGroupStationName": "Cairngorm",
  +                "observedAt": "2017-03-07T06:00:00Z"
  +              }
  +            ],
  +            "maxAirTemperatureInCelsius": 13.1,
  +            "maxWeatherObservations": [
  +              {
  +                "meteoGroupStationId": "3313",
  +                "meteoGroupStationName": "Rhyl",
  +                "observedAt": "2017-03-07T09:00:00Z"
  +              }
  +            ],
  +            "maxWindSpeedInKnots": 10.4,
  +            "maxWindSpeedObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-07T00:00:00Z"
  +              },
  +              {
  +                "meteoGroupStationId": "30651",
  +                "meteoGroupStationName": "Leatherhead",
  +                "observedAt": "2017-03-07T06:00:00Z"
  +              }
  +            ],
  +            "maxWindGustInKnots": 15.6,
  +            "maxWindGustObservations": [
  +              {
  +                "meteoGroupStationId": "43081",
  +                "meteoGroupStationName": "Baskervilles",
  +                "observedAt": "2017-03-07T00:00:00Z"
  +              }
  +            ],
  +            "maxSunshineDurationInMinutes": 123,
  +            "maxSunshineDurationObservations": [
  +                {
  +                    "meteoGroupStationId": "3002",
  +                    "meteoGroupStationName": "Baltasound",
  +                    "observedAt": "2017-03-07T00:00:00Z"
  +                }
  +            ]
  +          }
  +        ]
  +      }
  +
  +#### Description
  +The first element in the array contains extreme values for seven days, every next one - data for the individual days.  
  +Here `observedUntil` and `observedFrom` fields represent period that has been used for extreme values calculation.
  +Because extreme values recalculate every hour, difference between `observedUntil` value and time of the request can be up to 1 hour.
  +The fields `minWeatherObservations`, `maxWeatherObservations`, `maxWindSpeedObservations`, `maxWindGustObservations` and `maxSunshineDurationObservations` are arrays that contain information about station where extreme value has been found and time where it has been observed.
  +Because inside period the same extreme values can be observed many times, the arrays can contain many weather observations.
   
   The extreme values recalculating algorithm based on the following:
    + best observation parameters are used to calculate this
  
positive.code: 
  ## Retrieve extreme values [/extreme]
  
  Extreme endpoint returns extreme values for the last 7 days for all the stations in the given country (trough `isoCountryCode` URL parameter). Mapping of country code to country id (in database) is present in Geostation file. Extreme values for UK pre-calculate every hour.
  
  ### Example
  
  `https://point-observation.weather.mg/extreme?isoCountryCode=UK`
  
  + Request extreme weather values for UK for the last 7 days
  
      + Headers
  
  
negative.code:    + 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`)
   + for max wind speed calculation `PT0S` period is used
   + for max wind gusts speed calculation `PT1H` period is used
   