What do the numbers mean? I'm a bit confused with this question.

Plant Location

Year Plant Built

Plant Annual Output (in metric tons)

Production Cost per Ton (Indexed to low-cost producer)

CBTG A.G

Saarbrun

1981

350,000

1.00

Victoria Chemicals

Liverpool

1967

250,000

1.09

Victoria Chemicals

Rotterdam

1967

250,000

1.09

Hosche A.G.

Hamburg

1977

300,000

1.02

Montecassino SpA

Genoa

1961

120,000

1.11

Saone-Poulet S.A.

Marseille

1972

175,000

1.07

Vaysol S.A.

Antwerp

1976

220,000

1.06

Next 10 largest plants

450,000

1.19