Create DatetimeIndex for the Dataframe localized to the timezone provided
    as the label of the second (time) column.

    Parameters
    ----------
    data: Dataframe
        Must contain 'DATE (MM/DD/YYYY)' column, second column must be labeled
        with the timezone and contain times in 'HH:MM' format.

    Returns
    -------
    data: Dataframe
        Dataframe with DatetimeIndex localized to the provided timezone.

def format_index(data):
    """Create DatetimeIndex for the Dataframe localized to the timezone provided
    as the label of the second (time) column.

    Parameters
    ----------
    data: Dataframe
        Must contain 'DATE (MM/DD/YYYY)' column, second column must be labeled
        with the timezone and contain times in 'HH:MM' format.

    Returns
    -------
    data: Dataframe
        Dataframe with DatetimeIndex localized to the provided timezone.
    """
    tz_raw = data.columns[1]
    timezone = TZ_MAP.get(tz_raw, tz_raw)
    datetime = data['DATE (MM/DD/YYYY)'] + data[tz_raw]
    datetime = pd.to_datetime(datetime, format='%m/%d/%Y%H:%M')
    data = data.set_index(datetime)
    data = data.tz_localize(timezone)
    return data