docs: def last_values(self):
          """Return a dict of all the 'last' parameters."""
          last_dict = {
              'date': self.last_session_date,
              'score': self.last_sleep_score,
              'breakdown': self.last_sleep_breakdown,
              'tnt': self.last_tnt,
              'bed_temp': self.last_bed_temp,
              'room_temp': self.last_room_temp,
              'resp_rate': self.last_resp_rate,
              'heart_rate': self.last_heart_rate,
              'processing': self.last_session_processing,
          }
          return last_dict