Pollock, Pollachius virens
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Jillian Price (JP) has been working with Pollock since 2014; before that, the age reader was Bill Duffy (WD). Sectioned otoliths are viewed with reflected light.
In tests where agreement is below 90%, bias indicates either the P-value of a symmetry test or ‘n/s’ (test not significant at the α = 0.05 level). The Evans & Hoenig test was used to test bias starting 1/2022; prior to that, a Bowker's test was used.
| Sample Source | Test Type | Date Completed | Age Reader | Number Aged | Number Tested | CV (%) | Agree-ment (%) | Bias |
|---|---|---|---|---|---|---|---|---|
| 2023 Commercial Samples (Q3) | Precision | 4/2024 | JP | 176 | 40 | 1.22 | 90.0 | |
| 2023 Autumn Survey (202304) | Precision | 12/2023 | JP | 115 | 40 | 0.00 | 100.0 | |
| 2023 Commercial Samples (Q2) | Precision | 12/2023 | JP | 237 | 50 | 0.63 | 96.0 | |
| 2019 Observer Samples (Q1-Q4) | Precision | 10/2023 | JP | 248 | 50 | 0.22 | 98.0 | |
| 2023 Commercial Samples (Q1) | Precision | 10/2023 | JP | 187 | 41 | 1.45 | 87.8 | n/s |
| 2022 Autumn Survey (202204) | Precision | 3/2023 | JP | 142 | 40 | 1.18 | 97.5 | |
| 2022 Commercial Samples (Q3-Q4) | Precision | 3/2023 | JP | 259 | 50 | 0.17 | 98.0 | |
| 2022 Commercial Samples (Q1-Q2) | Precision | 1/2023 | JP | 117 | 40 | 1.11 | 92.5 | |
| 2022 Spring Survey (202202) | Precision | 9/2022 | JP | 136 | 41 | 0.00 | 100.0 | |
| 2021 Commercial Samples (Q1-4) | Precision | 4/2022 | JP | 187 | 40 | 0.66 | 95.0 | |
| 2021 Autumn Survey (202104) | Precision | 4/2022 | JP | 102 | 32 | 1.52 | 93.8 | |
| 2020 Commercial Samples (Q4) | Precision | 5/2021 | JP | 201 | 40 | 0.59 | 95.0 | |
| 2020 Commercial Samples (Q3) | Precision | 5/2021 | JP | 118 | 40 | 0.00 | 100.0 | |
| 2020 Commercial Samples (Q2) | Precision | 5/2021 | JP | 202 | 40 | 0.21 | 97.5 | |
| 2020 Commercial Samples (Q1) | Precision | 4/2021 | JP | 150 | 42 | 0.42 | 95.2 | |
| 2019 Commercial Samples (Q4) | Precision | 8/2020 | JP | 122 | 40 | 0.00 | 100.0 | |
| 2019 Commercial Samples (Q3) | Precision | 3/2020 | JP | 209 | 46 | 0.44 | 97.8 | |
| 2019 Commercial Samples (Q2) | Precision | 1/2020 | JP | 174 | 40 | 0.00 | 100.0 | |
| 2019 Commercial Samples (Q1) | Precision | 12/2019 | JP | 253 | 62 | 0.72 | 91.9 | |
| 2018 Commercial Samples (Q4) | Precision | 6/2019 | JP | 200 | 50 | 1.16 | 90.0 | |
| 2018 Commercial Samples (Q3) | Precision | 5/2019 | JP | 176 | 43 | 0.19 | 97.7 | |
| 2018 Commercial Samples (Q2) | Precision | 2/2019 | JP | 277 | 59 | 0.34 | 98.3 | |
| 2018 Commercial Samples (Q1) | Precision | 9/2018 | JP | 394 | 70 | 0.16 | 98.6 | |
| 2017 Commercial Samples (Q4) | Precision | 5/2018 | JP | 401 | 78 | 1.34 | 87.2 | n/s |
| 2017 Commercial Samples (Q3) | Precision | 4/2018 | JP | 681 | 99 | 0.00 | 100.0 | |
| 2017 Commercial Samples (Q2) | Precision | 3/2018 | JP | 568 | 101 | 0.13 | 98.0 | |
| 2017 Commercial Samples (Q1) | Precision | 3/2018 | JP | 631 | 96 | 0.61 | 92.7 | |
| 2017 Spring Survey (201702) | Precision | 8/2017 | JP | 171 | 44 | 0.00 | 100.0 | |
| 2016 Commercial Samples (Q4) | Precision | 4/2017 | JP | 427 | 80 | 0.00 | 100.0 | |
| 2016 Commercial Samples (Q3) | Precision | 4/2017 | JP | 684 | 93 | 0.22 | 98.9 | |
| 2016 Autumn Survey (201604) | Precision | 2/2017 | JP | 163 | 54 | 0.37 | 98.2 | |
| 2016 Commercial Samples (Q2) | Precision | 1/2017 | JP | 619 | 94 | 0.31 | 96.8 | |
| 2016 Commercial Samples (Q1) | Precision | 10/2016 | JP | 620 | 92 | 1.05 | 88.0 | n/s |
| 2016 Spring Survey (201602) | Precision | 9/2016 | JP | 391 | 78 | 0.14 | 98.7 | |
| 2015 Commercial Samples (Q4) | Precision | 4/2016 | JP | 745 | 101 | 0.19 | 98.0 | |
| 2015 Commercial Samples (Q3) | Precision | 4/2016 | JP | 693 | 104 | 1.06 | 89.4 | n/s |
| 2015 Autumn Survey (201504) | Precision | 3/2016 | JP | 270 | 58 | 0.00 | 100.0 | |
| 2015 Commercial Samples (Q2) | Precision | 1/2016 | JP | 682 | 99 | 0.51 | 92.9 | |
| 2015 Commercial Samples (Q1) | Precision | 12/2015 | JP | 724 | 96 | 1.05 | 88.5 | n/s |
| 2015 Spring Survey (201502) | Precision | 7/2015 | JP | 200 | 45 | 0.63 | 97.8 | |
| 2014 Commercial Samples (Q4) | Precision | 3/2015 | JP | 636 | 97 | 1.66 | 84.5 | n/s |
| 2014 Commercial Samples (Q3) | Precision | 3/2015 | JP | 549 | 99 | 2.96 | 79.8 | 0.011 |
| 2014 Autumn Survey (201404) | Precision | 3/2015 | JP | 234 | 51 | 0.00 | 100.0 | |
| 2014 Commercial Samples (Q2) | Precision | 12/2014 | JP | 604 | 97 | 2.17 | 79.4 | n/s |
| 2014 Commercial Samples (Q1) | Precision | 9/2014 | JP | 815 | 92 | 1.80 | 81.5 | n/s |
| 2013 Commercial Samples (Q1-4) | Precision | 8/2014 | JP | — | 93 | 1.69 | 81.9 | n/s |
| 2013 Commercial Samples (Q4) | Precision | 8/2014 | JP vs. WD | — | 147 | 2.49 | 79.6 | n/s |
| 2013 Commercial Samples (Q3) | Precision | 8/2014 | JP vs. WD | -— | 148 | 2.95 | 72.3 | n/s |
| 2013 Commercial Samples (Q2) | Precision | 8/2014 | JP vs. WD | — | 148 | 3.44 | 68.9 | n/s |
| 2013 Commercial Samples (Q1) | Precision | 7/2014 | JP vs. WD | — | 109 | 3.84 | 62.4 | n/s |
| 2014 Spring Survey (201402) | Precision | 7/2014 | JP | 154 | 43 | 5.85 | 81.4 | 0.047 |
| 2013 Spring Survey (201302) | Precision | 7/2014 | JP vs. WD | 162 | 50 | 7.22 | 62.0 | n/s |
| 2013 Commercial Samples (Q4) | Precision | 3/2014 | WD | 629 | 99 | 1.85 | 84.9 | n/s |
| 2013 Commercial Samples (Q3) | Precision | 3/2014 | WD | 773 | 99 | 0.82 | 89.9 | n/s |
| 2013 Commercial Samples (Q2) | Precision | 2/2014 | WD | 569 | 100 | 1.68 | 79.0 | 0.025 |
| 2013 Commercial Samples (Q1) | Precision | 2/2014 | WD | 421 | 93 | 1.38 | 83.9 | n/s |
| 2012 Autumn Survey (201204) | Precision | 1/2014 | WD | 212 | 49 | 2.12 | 93.9 | |
| 2013 Spring Survey (201302) | Precision | 1/2014 | WD | 162 | 45 | 2.17 | 84.4 | n/s |
| 2012 Commercial Samples (Q4) | Precision | 10/2013 | WD | 575 | 95 | 1.10 | 88.4 | n/s |
| 2012 Commercial Samples (Q3) | Precision | 9/2013 | WD | 533 | 98 | 1.66 | 84.7 | n/s |
| 2012 Commercial Samples (Q2) | Precision | 8/2013 | WD | 512 | 98 | 1.71 | 81.6 | n/s |
| 2012 Commercial Samples (Q1) | Precision | 7/2013 | WD | 419 | 86 | 1.20 | 84.9 | n/s |
| 2011 Commercial Samples (Q4) | Precision | 6/2013 | WD | 485 | 97 | 1.80 | 81.4 | n/s |
| 2011 Commercial Samples (Q3) | Precision | 6/2013 | WD | 636 | 99 | 2.16 | 75.8 | n/s |
| 2011 Commercial Samples (Q2) | Precision | 4/2013 | WD | 570 | 95 | 1.43 | 84.2 | n/s |
| 2011 Commercial Samples (Q1) | Precision | 3/2013 | WD | 508 | 90 | 2.05 | 77.8 | n/s |
| 2011 Autumn Survey (201105) | Precision | 3/2013 | WD | 178 | 49 | 2.05 | 91.8 | |
| 2011 Spring Survey (201102) | Precision | 3/2013 | WD | 163 | 46 | 1.64 | 84.8 | n/s |
| 2010 Commercial Samples (Q4) | Precision | 10/2011 | WD | 633 | 105 | 3.28 | 70.5 | n/s |
| 2010 Commercial Samples (Q3) | Precision | 10/2011 | WD | 643 | 102 | 2.28 | 76.5 | n/s |
| 2010 Autumn Survey (201004) | Precision | 10/2011 | WD | 118 | 54 | 6.70 | 70.4 | n/s |
| 2010 Commercial Samples (Q2) | Precision | 7/2011 | WD | 486 | 98 | 2.44 | 77.6 | n/s |
| 2010 Commercial Samples (Q1) | Precision | 6/2011 | WD | 619 | 99 | 3.24 | 67.7 | n/s |
| 2010 Spring Survey (201001) | Precision | 1/2011 | WD | 118 | 60 | 2.59 | 85.0 | n/s |
| 2009 Spring Survey (200902) | Precision | 12/2010 | WD | 163 | 41 | 4.17 | 80.5 | n/s |
| 2009 Commercial Samples (Q1-4) | Precision | 4/2010 | WD | 1032 | 95 | 2.75 | 72.6 | n/s |
| 2008 Commercial Samples (Q1-4) | Precision | 4/2010 | WD | 1159 | 99 | 2.71 | 74.7 | n/s |
| 2007 Commercial Samples (Q4) | Precision | 3/2010 | WD | 534 | 99 | 3.80 | 66.7 | n/s |
| 2007 Commercial Samples (Q3) | Precision | 3/2010 | WD | 456 | 99 | 1.62 | 83.8 | n/s |
| 2007 Commercial Samples (Q2) | Precision | 3/2010 | WD | 296 | 80 | 2.21 | 77.5 | n/s |
| 2007 Commercial Samples (Q1) | Precision | 3/2010 | WD | 452 | 99 | 3.08 | 68.7 | 0.067 |
| 2006 Commercial Samples (Q4) | Precision | 3/2010 | WD | 545 | 100 | 3.03 | 69.0 | n/s |
| 2006 Commercial Samples (Q3) | Precision | 2/2010 | WD | 387 | 80 | 0.77 | 92.5 | |
| 2006 Commercial Samples (Q2) | Precision | 2/2010 | WD | 658 | 100 | 3.28 | 66.0 | n/s |
| 2006 Commercial Samples (Q1) | Precision | 2/2010 | WD | 395 | 80 | 3.74 | 62.5 | n/s |
| 2005 Commercial Samples (Q4) | Precision | 2/2010 | WD | 477 | 100 | 1.54 | 87.0 | n/s |
| 2005 Commercial Samples (Q3) | Precision | 2/2010 | WD | 536 | 100 | 3.07 | 73.0 | n/s |
| 2005 Commercial Samples (Q2) | Precision | 1/2010 | WD | 327 | 80 | 4.72 | 60.0 | n/s |
| 2005 Commercial Samples (Q1) | Precision | 1/2010 | WD | 256 | 70 | 4.29 | 65.7 | n/s |
| 2007 Spring Survey (200703) | Precision | 8/2007 | WD | 210 | 25 | 2.01 | 84.0 | n/s |
| 2006 Autumn Survey (200610) | Precision | 8/2007 | WD | 106 | 25 | 6.46 | 68.0 | 0.046 |
