# Data Dictionary - European Power Price Convergence & Congestion - daily by border, cleaned Parquet

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

| column | type | description |
|---|---|---|
| `zone` | str | Neighbouring bidding-zone pair 'A~B' |
| `ts` | timestamp (UTC) | Day |
| `variable` | str | Mean absolute spread / signed spread A-B / Hours fully coupled (%) |
| `value` | float | EUR/MWh (spreads) or % (coupled hours) |
| `unit` | str | mixed - see the variable name |
| `res_min` | int | Native resolution (daily = 1440) |

*Source: ENTSO-E Transparency Platform (derived).*