Table 1.
Sources of yearly quality ratings for Port vintages.
| Source | Acronym | Rating |
|---|---|---|
| (1) Berry Bros & Rudd | BBR | 1–10 |
| (2) Decanter | DC | 1–5 |
| (3) Instituto dos Vinhos do Douro e do Porto | IVDP | 0–1 |
| (4) Michael Broadbent | MB | 0–5 |
| (5) Sotheby’s Wine Encyclopaedia Wine Encyclopaedia | SWE | 0–100 |
| (6) Vintages | VT | 0–10 |
| (7) Wine Advocate | WA | 50–100 |
| (8) Wine Enthusiast | WE | 50–100 |
| (9) Wine Spectator | WS | 50–100 |
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