anchor.diff:                  "observedFrom": "2016-10-14T09:00:00Z",
                   "observedUntil": "2016-10-15T09:00:00Z",
                   "observedPeriod": "PT24H",
  -                "precipitationAmountInMillimeter": 0.1,
  -                "precipitationAmountInInch": 0.004,
  +                "precipitationAmountInMillimeter": 6.1,
  +                "precipitationAmountInInch": 0.24,
                   "sunshineDurationInHours": 12,
                   "sunshineDurationInMinutes": 720.0
                 }
  
positive.code:                 "temperatureMaxInKelvin": 275.65,
                  "temperatureMinInCelsius": 2.8,
                  "temperatureMinInFahrenheit": 37.04,
                  "temperatureMinInKelvin": 275.94998
                },
                {
                  "meteoGroupStationId": "3007237",
  
negative.code:                 "windGustInMilesPerHour": 1.8412471,
                  "windGustInBeaufort": 1.0,
                  "windGustInKnots": 1.5999997,
                  "precipitationAmountInMillimeter": 0.7,
                  "precipitationAmountInInch": 0.028
                },
                {
                  "meteoGroupStationId": "3007237",
  