<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _merge_results(self):
 		""" 		hidden function to merge the list of results into one 		dictionary and 'normalize' the time stamps 		"""

		new_dict = {}
		for it in self.data:
			new_dict.update(it)

		for k,v in new_dict.items():
			for kk, vv in v.time_stamps.items():
				for kkk,vvv in vv.items():
					new_dict[k].time_stamps[kk][kkk] = vvv - self.HB_config['time_ref']

		self.data = new_dict