code: def plot(self, entities: List[str]):
          
  
          ax = self._sensors_num_df[entities].plot(figsize=[12, 6])
          ax.legend(loc="center left", bbox_to_anchor=(1, 0.5))
          ax.set_xlabel("Date")
          ax.set_ylabel("Reading")
          return
docs: Basic plot of a numerical sensor data.
  
          Parameters
          ----------
          entities : a list of entities