# Data Dictionary - European Construction Output - monthly production index, cleaned Parquet

**Units:** vary by `series` - read the per-row `unit` column (overall: index (2021=100)).  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | Geo / country code (DE, FR, NL, …) |
| `ts` | timestamp (UTC) | Month |
| `series` | str | Construction index / buildings / civil engineering |
| `value` | float | Index (2021=100) |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (monthly) |


## Coverage note

The file runs to **2026-05-01**, but 1 of 4 `series` values stop earlier. This reflects the upstream publication schedule, not a gap in processing - the remaining values are current.

| series | last value | behind by |
|---|---|---|
| `Building permits - floor area (index)` | 2025-01-01 | 485 days |
*Source: Eurostat (European Commission).*