def sort_data(num_vincs=6):
    """
    DESCRIPTION:
    Sorts data folders in Ejecta_Simulation_Data by vinc.
    
    CALLING SEQUENCE:
    sort_data(num_vincs=6)
    
    KEYWORDS:
    ## num_vincs: number of velocity increments (default 6; +0-5 km/s)
    """
    
    parent = os.getcwd()
    folders = sorted(glob.glob(parent + '/Ejecta_Simulation_Data/5000e*'))
    for i in range(num_vincs):
        Path(parent + '/Ejecta_Simulation_Data/'+str(i)+'vinc').mkdir(parents=True, exist_ok=True)
    for folder in folders:
        vincnum = folder.split('/')[-1].split('_')[2][0]
        shutil.move(folder, parent + '/Ejecta_Simulation_Data/' + str(vincnum) + 'vinc')