===== Making survey data monotonic =====
As one can observe in plots of the survey indices [[admb_real:sdreport_and_vpa|(see top here)]], these are frequently not monotonic. For this reason we make the survey indices nonicreasing by removing the offending indides, and repeat the experiments in the section about [[admb_real:two_qs_cohorts_per_run|choosing the number of cohorts per run]]. To be more specific, we remove the observations of a cohort which are smaller than subsequent observations.

=== Summary ===

TBD.

==== First cohort born in 1994 ====

^ Num. cohorts ^ Trajectories ^ Estimates ^
| 1 |{{:admb_real:cod_two_q_mono_vs_vpa_94_94.png?180|}} |<file txt cod.par># Number of parameters = 5  Objective function value = -3.08697  Maximum gradient component = 1.69126e-05
# N0:
 3.29757
# q02:
 0.605650
# q3plus:
 0.354787
# logs:
-0.885871081891
# M:
0.499998979520
 </file> |
| 2 |{{:admb_real:cod_two_q_mono_vs_vpa_94_95.png?180|}} |<file txt cod.par># Number of parameters = 6  Objective function value = -6.85054  Maximum gradient component = 6.41162e-05
# N0:
 3.77137 6.68468
# q02:
 0.412709
# q3plus:
 0.290194
# logs:
-0.928159057590
# M:
0.499999742594
 </file>  |
| 3 |{{:admb_real:cod_two_q_mono_vs_vpa_94_96.png?180|}} |<file txt cod.par># Number of parameters = 7  Objective function value = -10.3721  Maximum gradient component = 2.04829e-05
# N0:
 5.24794 8.95292 9.36205
# q02:
 0.275668
# q3plus:
 0.183000
# logs:
-0.932172674583
# M:
0.499999872250
 </file>  |
| 4 |{{:admb_real:cod_two_q_mono_vs_vpa_94_97.png?180|}} |<file txt cod.par> # Number of parameters = 8  Objective function value = -9.88239  Maximum gradient component = 1.61960e-05
# N0:
 5.34875 9.10636 9.49745 9.18773
# q02:
 0.261406
# q3plus:
 0.180118
# logs:
-0.808824614075
# M:
0.499999804090
</file>  |

==== First cohort born in 1995 ====

^ Num. cohorts ^ Trajectories ^ Estimates ^
| 1 |{{:admb_real:cod_two_q_mono_vs_vpa_95_95.png?180|}} |<file txt cod.par># Number of parameters = 5  Objective function value = -5.15249  Maximum gradient component = 2.53430e-06
# N0:
 7.71856
# q02:
 0.278557
# q3plus:
 0.237080
# logs:
-1.14406139971
# M:
0.499999698632
 </file>  |
| 2 |{{:admb_real:cod_two_q_mono_vs_vpa_95_96.png?180|}} |<file txt cod.par># Number of parameters = 6  Objective function value = -9.86903  Maximum gradient component = 6.77050e-05
# N0:
 11.6958 11.8592
# q02:
 0.182385
# q3plus:
 0.132361
# logs:
-1.11681438596
# M:
0.499999817025
 </file>  |
| 3 |{{:admb_real:cod_two_q_mono_vs_vpa_95_97.png?180|}} |<file txt cod.par># Number of parameters = 7  Objective function value = -8.59159  Maximum gradient component = 3.32696e-05
# N0:
 10.8458 11.0748 10.9318
# q02:
 0.196332
# q3plus:
 0.145901
# logs:
-0.857982907239
# M:
0.499999584145
 </file>  |
| 4 |{{:admb_real:cod_two_q_mono_vs_vpa_95_98.png?180|}} |<file txt cod.par># Number of parameters = 8  Objective function value = -9.29134  Maximum gradient component = 3.16538e-05
# N0:
 21.7913 21.2949 22.0305 14.3428
# q02:
 0.0797296
# q3plus:
 0.0678989
# logs:
-0.790354539022
# M:
0.499999844255
 </file>  |

==== First cohort born in 1996 ====

^ Num. cohorts ^ Trajectories ^ Estimates ^
| 1 |{{:admb_real:cod_two_q_mono_vs_vpa_96_96.png?180|}} |<file txt cod.par># Number of parameters = 5  Objective function value = -5.44246  Maximum gradient component = 8.80377e-05
# N0:
 21.7166
# q02:
 0.0988148
# q3plus:
 0.0620195
# logs:
-1.18030733268
# M:
0.499998776989
 </file>  |
| 2 |{{:admb_real:cod_two_q_mono_vs_vpa_96_97.png?180|}} |<file txt cod.par># Number of parameters = 6  Objective function value = -4.36038  Maximum gradient component = 6.45188e-06
# N0:
 13.3269 13.3847
# q02:
 0.160961
# q3plus:
 0.113024
# logs:
-0.772523846511
# M:
0.499978340306
 </file>  |
| 3 |{{:admb_real:cod_two_q_mono_vs_vpa_96_98.png?180|}} |<file txt cod.par># Number of parameters = 7  Objective function value = -5.97017  Maximum gradient component = 4.44568e-05
# N0:
 28.4555 29.7430 18.6543
# q02:
 0.0558861
# q3plus:
 0.0500025
# logs:
-0.748757059934
# M:
0.499999418221
 </file>  |
| 4 |{{:admb_real:cod_two_q_mono_vs_vpa_96_99.png?180|}} |<file txt cod.par># Number of parameters = 8  Objective function value = -7.85681  Maximum gradient component = 4.30842e-05
# N0:
 27.0583 28.4144 17.6760 11.9686
# q02:
 0.0500004
# q3plus:
 0.0500001
# logs:
-0.753445416737
# M:
0.486292217940
 </file>  |

==== First cohort born in 1997 ====

^ Num. cohorts ^ Trajectories ^ Estimates ^
| 1 |{{:admb_real:cod_two_q_mono_vs_vpa_97_97.png?180|}} |<file txt cod.par># Number of parameters = 5  Objective function value = -0.576982  Maximum gradient component = 6.53503e-06
# N0:
 3.18481
# q02:
 0.572871
# q3plus:
 0.333259
# logs:
-0.572122768699
# M:
0.389392591051
 </file>  |
| 2 |{{:admb_real:cod_two_q_mono_vs_vpa_97_98.png?180|}} |<file txt cod.par># Number of parameters = 6  Objective function value = -2.56523  Maximum gradient component = 2.18165e-05
# N0:
 28.7168 18.0327
# q02:
 0.0500009
# q3plus:
 0.0543061
# logs:
-0.660327137031
# M:
0.499995000270
 </file>  |
| 3 |{{:admb_real:cod_two_q_mono_vs_vpa_97_99.png?180|}} |<file txt cod.par># Number of parameters = 7  Objective function value = -5.07237  Maximum gradient component = 8.93392e-05
# N0:
 23.7926 14.7673 9.86596
# q02:
 0.0500001
# q3plus:
 0.0544865
# logs:
-0.720537843156
# M:
0.464181122587
 </file>  |
| 4 |{{:admb_real:cod_two_q_mono_vs_vpa_97_00.png?180|}} |<file txt cod.par># Number of parameters = 8  Objective function value = -8.16818  Maximum gradient component = 4.40661e-06
# N0:
 21.6570 13.2731 8.74892 18.7506
# q02:
 0.0517102
# q3plus:
 0.0500001
# logs:
-0.772272656988
# M:
0.435222747275
 </file>  |