|Results of yellowtail flounder age-reader precision test
against randomly selected samples from the 2004 NEFSC commercial samples (all quarters combined), and the NEFSC 2004 autumn and 2005 spring bottom trawl surveys.
(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.
2004 Commercial Samples (Q1-4), 2004 Autumn Survey (200407), & 2005 Spring Survey (200503)
||June 2005 |
| *SP was a trainee, but a comparison test was not possible with these samples, as the production ages were determined by both readers together.