# Data Dictionary - Global Inflation (OECD CPI) - headline, core, food & energy, cleaned Parquet

**Units:** vary by `series` - read the per-row `unit` column (overall: index / % annual).  Times are UTC.

| column | type | description |
|---|---|---|
| `zone` | str | ISO-3 country code (USA, JPN, GBR, …) |
| `ts` | timestamp (UTC) | Month |
| `series` | str | CPI index / headline % / core % / food % / energy % |
| `value` | float | Index or annual % |
| `unit` | str | Unit |
| `res_min` | int | Native resolution (monthly) |

*Source: OECD.*