# Data Dictionary - US Treasury Auction Internals - per-auction demand panel, cleaned Parquet

**Units:** vary by `metric` - read the per-row `unit` column (overall: mixed).  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Tenor + security type (e.g. '10-Year Note') |
| `ts` | timestamp (UTC) | Auction date |
| `metric` | str | bid_to_cover / high_yield / coupon_rate / indirect_pct / direct_pct / primary_dealer_pct / tail_alloc_pct / total_accepted_bn |
| `value` | float | Value of the metric (unit varies by metric - see the unit column) |
| `unit` | str | ratio / percent / USD bn |
| `res_min` | int | Native resolution (daily = 1440) |

*Source: U.S. Department of the Treasury (Fiscal Data) & Federal Reserve Bank of New York.*