|Results of Atlantic herring age-reader precision test
using randomly selected samples from the 2012 NEFSC acoustic survey.
(A) Agreement plot, showing both the production 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 production 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 production ages. (C) Results summary, indicating results of the test for each production age.
2012 Acoustic Survey (201206)
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|| June 2014