Results of haddock age-reader accuracy test
against randomly selected samples from the NEFSC reference collection,
conducted before production ageing.
(A) Agreement plot, showing both the reference and test ages. A small amount of noise was added to the data to improve visibility of overlapping data points. (B) Age-frequency table, showing the test ages across the top and the reference ages on the
left. Numbers in the shaded boxes indicate agreement between the two
ages. Numbers above this diagonal indicate fish which were under-aged during the test; those below the shaded boxes were over-aged. Total age frequencies are given by age for both the test and reference ages. (C) Results summary,
indicating results of the test for each reference age.