# Data Dictionary - US Federal Contract Spending Momentum (YoY) - derived Parquet

**Units:** all `yoy_pct` values are in **% YoY**.  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Awarding federal agency |
| `ts` | timestamp (UTC) | Month |
| `yoy_pct` | float | Year-over-year % change in monthly obligations |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (monthly) |

*Source: USAspending.gov (U.S. Department of the Treasury).*