aList = [ (1, 545985180000, 'device_id_hao', 'vol', None, 12.0),
 		  (1, 545985180000, 'device_id_hao', 'temp', None, 38.0),
 		  (2, 545985300000, 'device_id_hao', 'vol', None, 220.0),
     	  (2, 545985300000, 'device_id_hao', 'temp', None, 39.0)];

=>

[
 (545985180000, 'device_id_hao', {'vol': 12.0, 'temp': 38.0})
 (545985300000, 'device_id_hao', {'vol': 220.0, 'temp': 39.0})
]