float getPredictionOfWindDirection()
    {
        PredictResponse predictedDirSin = api.GetPrediction(zoneId, "sin wind direction");

        Debug.Log("prediction = " + predictedDirSin.ToString());
        DateTime sinAge = Convert.ToDateTime(predictedDirSin.latestDataUsed);


        Debug.Log("prediction age  = " + predictionAge.ToString() + " - " + (DateTime.Now.Second - predictionAge.Second).ToString());

        PredictResponse predictedDirCos = api.GetPrediction(zoneId, "cos wind direction");

        Debug.Log("prediction = " + predictedDirCos.ToString());
        DateTime cosAge = Convert.ToDateTime(predictedDirCos.latestDataUsed);

        Debug.Log("prediction age  = " + predictionAge.ToString() + " - " + (DateTime.Now.Second - predictionAge.Second).ToString());

        if (sinAge == cosAge)
        {
            predictionAge = sinAge;
            arrow.color   = new Color(1f, 1f, 0f);
        }
        else
        {
            arrow.color = new Color(1f, 1f, 1f);
        }



        return(MyMaths.SinCosToDegrees(predictedDirSin.value, predictedDirCos.value));
    }