Datasets to power the Market Depth chart.
Both bids and asks are lists of 2-item tuples: [price, volume]

Additionally there are aggregate values provided for both sides of the book
and both quote and base currencies (in that order) under the totals key:

totals = [
[amount of quote currency in bids, amount of base currency in bids],
[amount of quote currency in asks, amount of base currency in asks],
]

A nice article explaining how the Depth Chart works:
https://hackernoon.com/depth-chart-and-its-significance-in-trading-bdbfbbd23d33

GET /api/public/market/ogc-btc/depth/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: public, s-maxage=1
Content-Type: application/json
Vary: Accept

{
    "bids": [],
    "asks": [
        [
            "0.005944",
            "0.999"
        ],
        [
            "0.005945",
            "5.999"
        ],
        [
            "0.005946",
            "14.808394"
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            "17.808394"
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        [
            "0.006098",
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            "0.006197",
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            "0.006298",
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        ],
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            "0.01499",
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        ],
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    "totals": [
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            0,
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}