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. Author manuscript; available in PMC: 2019 Sep 18.
Published in final edited form as: Front Mar Sci. 2018;5:10.3389/fmars.2018.00422. doi: 10.3389/fmars.2018.00422

FIGURE 4 |.

FIGURE 4 |

Three possible trajectories of attainment deficit over time, representing three types of temporal change in criterion attainment - i.e., improving, stable, and degrading conditions.