# Data Dictionary - US Treasury Cash Balance & Reverse Repo - daily, cleaned Parquet

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

| column | type | description |
|---|---|---|
| `zone` | str | Always US |
| `ts` | timestamp (UTC) | Trading day |
| `series` | str | Treasury General Account / Reverse Repo |
| `usd_bn` | float | Balance / accepted volume, $ billions |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (daily = 1440) |

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