def load_cluster_data(clusters_file):
    """
    Loads into  a dictionary the coords of each cluster center
    :param clusters_file: name of the MSM clusters file
    :return: dict with the clusters as keys and the coords as values
    """
    clusters_data = {}
    with open(clusters_file, "r") as inputfile:
        for line in inputfile:
            line = line.split()
            clusters_data[int(line[1])] = [float(line[-6]), float(line[-5]), float(line[-4])]
    return clusters_data