def Radio2NormOption_Y_Variable(argument):
    """Dictionary for switching the normalisation options in the radio box"""
    switcher = {
    0: 'Raman_Intensity',
    1: 'Vec_Norm_Intensity',
    2: 'std_var_Norm_Intensity',
    3: 'Zero_to_One_Intensity'
    }
    return switcher.get(argument, 'k-')