A major exception is the Pacific salmon estimates. In this case the spawners and recruitment may have correlated errors because the same data are used to calculate both. Each page of figures consists of a header followed by eight panels. The header defines the stock, and gives the units of spawner and recruitment data. Units are given in the heading.
Arrows trace the trajectory of the population.
The years of maximum and minimum recruitment are identified. This panel shows the recruitment vs. spawners with the maximum likelihood estimate of the mean for four spawner-recruitment functions. The spawner-recruitment functions were f it under the assumption that the probability distribution for any spawner abundance is given by a lognormal model fitted for each of the four recruitment functions. This panel shows the spawner-recruitment functions fit using the assumption that recruitment for any spawner abundance follows a gamma distribution. The spawner-recruitment functions are described by the same line styles as in the last panel.