Table 4. Parameter estimates obtained from the Fox model (Fox), the Yoshimoto-Clarke model (YC), the Schnute regression model (Schnute), the ASPIC program, the Observation model (Observation), and the state-space production model (SSP)

Parameters Fox YC Schnute ASPIC Observation SSP
r 0.94 2.76 −0.35 0.18 1.13(0.69, 1.57) 0.16(0.05, 1.03)
k −483,829 160,198 −16,88,001 85,693,999 596,002(338,613, 853,392) 1,832,623(851,710, 12,900,000)
q −6.56 × 10−5 2.05 × 10−4 −2.06 × 10−5 2.59 × 10−7 4.88 × 10−5 (2.59 × 10−5, 7.17 × 10−5) 5.49 × 10−6 (1.70 × 10−6, 4.18 × 10−5)
σ p 2 NA NA NA NA NA 0.13(0.08, 0.30)
σ o 2 NA NA NA NA 0.03(0.02, 0.04) 0.07(0.04, 0.15)
P1999 0.53 0.51 0.48 0.60 0.53(0.47, 0.58) 0.51(0.13, 1.49)
NAs in the table indicate that the model does not estimate the corresponding parameter(s).
The 95% confidence intervals for parameter estimates for the Observation model and 95% credible intervals for the SSP model are provided in parentheses.
Except for the ASPIC program results, the units of k and q are metric tons (MT), and 1/haul, respectively.
For the ASPIC program, units for r and q are year−1 and year−1haul−1, respectively.
YC, Yoshimoto-Clarke; SSP, state-space production.