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Table 4
Estimated length-based indicators in cm. The indicators in this table, relative to the respective reference points, were used to derive the stock status of the frigate tuna stock in Sri Lankan waters (Fig. 4).
| Year | M | LBI | |||||||
|---|---|---|---|---|---|---|---|---|---|
| LC (cm) | L25% (cm) | Lmaxy (cm) | LF=M (cm) | Lmean (cm) | Lopt (cm) | L95% (cm) | Lmax5% (cm) | ||
| 2018 | Mean | 40.3 | 35.1 | 40.3 | 45.7 | 43.2 | 40.7 | 50.7 | 52.3 |
| Max | 40.3 | 35.1 | 40.3 | 44.7 | 43.2 | 36.9 | 50.7 | 52.3 | |
| Min | 40.3 | 35.1 | 40.3 | 47.4 | 43.2 | 45.9 | 50.7 | 52.3 | |
| 2019 | Mean | 35.1 | 35.1 | 40.3 | 41.6 | 39.9 | 40.7 | 50.7 | 53.0 |
| Max | 35.1 | 35.1 | 40.3 | 40.5 | 39.9 | 36.9 | 50.7 | 53.0 | |
| Min | 35.1 | 35.1 | 40.3 | 43.6 | 39.9 | 45.9 | 50.7 | 53.0 | |
| 2020 | Mean | 27.3 | 29.9 | 40.3 | 35.5 | 34.2 | 40.7 | 42.9 | 44.6 |
| Max | 27.3 | 29.9 | 40.3 | 34.1 | 34.2 | 36.9 | 42.9 | 44.6 | |
| Min | 27.3 | 29.9 | 40.3 | 38.1 | 34.2 | 45.9 | 42.9 | 44.6 | |
| 2021 | Mean | 27.3 | 29.9 | 40.3 | 35.5 | 34.6 | 40.7 | 42.9 | 45.1 |
| Max | 27.3 | 29.9 | 40.3 | 34.1 | 34.6 | 36.9 | 42.9 | 45.1 | |
| Min | 27.3 | 29.9 | 40.3 | 38.1 | 34.6 | 45.9 | 42.9 | 45.1 | |
| 2022 | Mean | 27.3 | 27.3 | 37.7 | 35.5 | 32.2 | 40.7 | 37.7 | 39.9 |
| Max | 27.3 | 27.3 | 37.7 | 34.1 | 32.2 | 36.9 | 37.7 | 39.9 | |
| Min | 27.3 | 27.3 | 37.7 | 38.1 | 32.2 | 45.9 | 37.7 | 39.9 | |
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