code: def standard_norm(data):
      means = data.mean(axis=1)
      stds = data.std(axis=1, ddof=1)
      data = (data - means[:, np.newaxis]) / stds[:, np.newaxis]
      return np.nan_to_num(data)
  
label_desc: Use image node_id 1 for calling a global function with example usage: standard_norm(data) and returns: np