d = df
for unit in d.orgUnit.unique()[:6]:
    dd = d[d.orgUnit == unit].set_index('date')
    plt.figure(figsize=(20,6))
#     dd.fact.plot(label='fact')
    (dd.wfm - dd.fact).plot(label='wfm error')
    (dd.lstm - dd.fact).plot(label='lstm error')
    plt.axhline(y=0, color='k')
    plt.legend()
    plt.title(unit)
    plt.show()