code: def plot_noisy_data():
      import matplotlib.pyplot as plt
  
      plt.plot(stations[0, :], -data[2, :] + noise[2, :], "k.")
      plt.draw()
      plt.pause(0.001)
  
imports: from test_mogi import *
label_desc: Use image node_id 2 for calling a global function with example usage: plot_noisy_data() without return types