Historical data query

[showaprofit]

I have some data which when decoded looks a bit like below. In the docs it says that batb or best available to back is levelpricevol triple delta of price changes. In plain English what are the 3 numbers associated with batb below please:-

{'op': 'mcm',
'clk': '5267057142',
'pt': 1506881163346,
'mc': [{'id': '1.134882321',
   'rc': [{'batb': [[0, 34, 3.5], [1, 15, 3.5], [2, 6, 2]],
     'batl': [[0, 130, 4.56]],
     'ltp': 0.0,
     'tv': 0.0,
     'id': 6953192},
    {'batb': [[0, 16, 5.81], [1, 9.6, 5.47], [2, 6, 2]],
     'batl': [[0, 26, 4.52]],
     'ltp': 0.0,
     'tv': 0.0,
     'id': 3413651},
    {'batb': [[0, 38, 2.44], [1, 30, 2], [2, 6, 2]],
     'ltp': 0.0,
     'tv': 0.0,
     'id': 3413653},
    {'batb': [[1, 40, 9.12], [2, 6, 2]], 'ltp': 0.0, 'tv': 0.0, 'id': 3413655},
    {'batb': [[0, 29, 7.36], [1, 17.5, 3], [2, 6, 2]],
     'batl': [[0, 85, 4.75]],
     'ltp': 0.0,
     'tv': 0.0,
     'id': 3413657},

[LiamP]

All in the docs:

https://docs.developer.betfair.com/d...tChangeMessage