def __flatten_col(d):
        """
        Flatten column so climateInterpretation and calibration are not nested.
        :param d:
        :return:
        """

        try:
            for entry in ["climateInterpretation", "calibration"]:
                if entry in d:
                    for k, v in d[entry].items():
                        d[k] = v
                    del d[entry]
        except AttributeError:
            pass

        return d