# Data Dictionary - EU ETS Verified Emissions & Allowances by Country - EEA/EUTL, cleaned Parquet

**Units:** vary by `metric` - read the per-row `unit` column (overall: (t CO2e / allowances)).  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Country code |
| `ts` | timestamp (UTC) | Year (period start) |
| `metric` | str | Verified emissions / Allocated allowances / Surrendered units |
| `value` | float | Tonnes CO2e (emissions) or allowance units |
| `unit` | str | t CO2e or allowances |
| `res_min` | int | Cadence (yearly) |

*Source: European Environment Agency (EUTL).*