Figure 13. Results of yellowtail flounder age-reader
precision exercise against randomly selected samples from the 2005 NEFSC
autumn bottom trawl survey. (A) Age-bias plot, showing the average
age attained during the exercise for fish of each age as determined during
production aging. Error bars indicate 95% confidence intervals. (B) Age-frequency
table, showing the ages attained during the test exercise 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 over-aged during the exercise; those below the
shaded boxes were under-aged during the exercise. Total age frequencies
are given by age for both the test and production ages.
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B.
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