pandas.DataFrame({'Labels': ['v1', 'v2', 'c1', 'c2'], 'Ave': [0.2, 0.3, 0.5,
    0.9], 'SD': [0.02, 0.1, 0.04, 0.06], 'Tot': [3, 4, 6, 8], 'Sig': [0.05,
    0.001, 0.0001, 0.05]}).set_index('Labels')
How to add color and asterisk per plot using seaborn pairgird and seaborn barplot