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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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