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Final Technical Report: - Southwest Fisheries Science Center - NOAA

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Table B-8. Summary of model validation statistics for final Risso's dolphin density models in the ETP built on 1986-2003 SWFSC survey data<br />

and tested on 2006 SWFSC survey data. Obs/Pred = ratio of stratified line-transect to model predicted density estimates. Obs = observed<br />

number of groups multiplied by the observed average group size. Pred = predicted number of groups multiplied by the predicted group size.<br />

Statistics are provided for each year separately and for all years pooled, and for each stratum separately and the study area as a whole.<br />

1986 1987 1988<br />

Stratum Obs/Pred Obs Pred Obs/Pred Obs Pred Obs/Pred Obs Pred<br />

Costa Rica Dome 0.189 16.667 87.964 1.078 36.350 33.732 0.581 13.000 22.361<br />

West Baja Peninsula NA NA NA NA NA NA 0.000 0.000 7.141<br />

Equatorial Cold Tongue 1.280 83.407 65.176 1.398 55.000 39.343 1.070 111.599 104.296<br />

Eastern Pacific Warm Pool 1.221 184.791 151.366 1.077 53.333 49.508 0.361 32.186 89.070<br />

Oligotrophic Offshore 0.000 0.000 14.035 1.180 20.000 16.942 1.647 55.500 33.689<br />

North Equatorial Countercurrent 0.000 0.000 14.579 2.158 52.000 24.098 2.905 53.500 18.416<br />

North Equatorial Current 0.453 17.500 38.606 0.568 8.000 14.080 0.105 5.000 47.655<br />

Study Area 0.891 284.865 319.548 1.106 171.183 154.752 0.995 306.453 308.083<br />

1989 1990 1998<br />

Stratum Obs/Pred Obs Pred Obs/Pred Obs Pred Obs/Pred Obs Pred<br />

Costa Rica Dome 0.485 25.996 53.561 0.457 14.667 32.117 1.109 197.925 178.394<br />

West Baja Peninsula 0.000 0.000 11.086 NA NA NA 0.000 0.000 16.505<br />

Equatorial Cold Tongue 0.412 29.833 72.328 0.952 96.267 101.172 0.641 69.415 108.329<br />

Eastern Pacific Warm Pool 1.206 193.547 160.426 0.131 12.333 94.024 1.104 318.423 288.321<br />

Oligotrophic Offshore 0.000 0.000 1.781 0.142 8.000 56.247 0.000 0.000 49.012<br />

North Equatorial Countercurrent 0.000 0.000 6.831 0.183 8.000 43.713 0.000 0.000 43.742<br />

North Equatorial Current 0.174 6.000 34.507 0.000 0.000 38.319 0.000 0.000 66.034<br />

Study Area 0.827 249.376 301.608 1.397 489.350 350.253 0.817 612.500 750.013<br />

1999 2000 2003<br />

Stratum Obs/Pred Obs Pred Obs/Pred Obs Pred Obs/Pred Obs Pred<br />

Costa Rica Dome 2.504 177.676 70.963 2.544 267.613 105.180 1.641 123.806 75.449<br />

West Baja Peninsula 2.216 35.000 15.794 0.112 6.500 57.889 0.000 0.000 18.541<br />

Equatorial Cold Tongue 0.147 8.563 58.257 3.136 132.494 42.245 0.863 22.647 26.243<br />

Eastern Pacific Warm Pool 0.633 131.000 207.031 0.810 166.283 205.198 0.884 176.774 200.065<br />

Oligotrophic Offshore 2.610 73.922 28.319 0.579 28.350 48.946 0.000 0.000 8.412<br />

North Equatorial Countercurrent 0.427 12.667 29.666 0.158 5.250 33.211 0.000 0.000 11.245<br />

North Equatorial Current 1.396 106.589 76.333 1.367 110.799 81.030 0.175 6.540 37.339<br />

Study Area 0.985 497.012 504.526 1.221 691.103 565.987 1.052 453.556 431.309<br />

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