def gather_reporter_statistics(reporter_monitors, metric_name):
    """
    Extracts a per-reporter map of an specific metric.
    :param reporter_monitors: List of all reporter monitors.
    :param metric_name: Monitor of interest.
    :return: Map, containing the metric information.
    """
    metric_per_reporter = {reporter_name: reporter_info[metric_name] for reporter_name, reporter_info
                           in
                           reporter_monitors.iteritems()}

    return metric_per_reporter