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This shows the weight of North Sea plaice in grams (second column) as a function of time in years (first column). Data from "Modelling Exploited Marine Fish Stocks" by J. Beyer and P. Sparre, Applications of Ecological Modelling in Environmental Management, Part A, 1983, page 505.

1st col	2nd col
1.250	8.330
2.000	33.330
2.125	62.500
3.000	83.330
3.250	108.330
4.625	216.667
5.625	295.830
6.625	366.670
7.625	491.670