Figure 4 Cohort growth curves. Expected cohort centers (thick solid lines) plus and minus (thin solid lines) cohort standard deviations are computed by using the cohort growth model with the point estimates of the growth parameters which are reported in Table 5. Cohort centers at campaigns ð mo;k and mo,k) are represented (circles and triangles, respectively). Squares: emergence (at time temo;k of length Lo). Observation times to are highlighted with vertical dashed lines.
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