> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polynode.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# 24h Statistics

> Rolling 24-hour volume, open price, and hourly candles per instrument.

```bash theme={null}
# All instruments
curl "https://api.polynode.dev/v3/perps/statistics?key=$POLYNODE_API_KEY"

# One instrument
curl "https://api.polynode.dev/v3/perps/statistics/sol?key=$POLYNODE_API_KEY"
```

```json theme={null}
{
  "instrument_id": 8,
  "symbol": "SOL-USD",
  "volume": "30017339.85",
  "open_price": "142.11",
  "klines": [
    [1783483200000, "142.11", "142.30", "141.86", "141.99", "10233.5", 512]
  ]
}
```

`volume` is 24h notional volume in USD. `klines` are the trailing hourly candles as `[open_time, open, high, low, close, volume, trade_count]`.

For custom intervals and longer ranges use [klines](/perps/market-data/klines); for a volume time series with your own bucketing use [volume](/perps/market-data/volume).