{
  "schema_version": "sweden-lake-fieldwork-preparation.v2",
  "country": "Sweden",
  "row_count": 20,
  "methodology": {
    "scope": "fieldwork-priority Sweden lake candidates only",
    "identity_rule": "identity resolution remains required when duplicate names, non-official registry names, source coordinate spread, or source name variants remain visible",
    "sampling_rule": "sampling fit stays separate from evidence density so very small basins remain review-first and engineered or wetland-style names never read as ordinary lake targets",
    "human_context_rule": "near-lake human aDNA remains decisive for fieldwork ordering: 10 km support is strongest, 20 km support remains shortlist-grade, and lakes with human support only beyond 20 km stay review-first even when their broader context is rich",
    "scenario_consistency_rule": "scenario consistency is high when a lake appears in at least four top-20 scenario lists across aggregate and 10-50 km bands, medium at two to three lists, else low",
    "fieldwork_ordering_rule": "fieldwork ordering sorts first by near-lake human aDNA posture, then by sampling posture, then by a human-weighted shortlist score; aggregate evidence score remains visible for traceability",
    "sead_context_rule": "SEAD 20 km context fit is high at >=20 sites, medium at >=5 sites, else low",
    "palaeopen_alignment_rule": "PalaeOpen alignment fit is high when the lake already carries >=2 direct pollen sources and >=4 evidence families within 20 km",
    "warning": "This is a fieldwork-preparation surface, not a final sampling recommendation."
  },
  "rows": [
    {
      "fieldwork_rank": 1,
      "fieldwork_shortlist_score": 0.6155,
      "aggregate_rank": 3,
      "lake_label": "Sj\u00f6torpasj\u00f6n (58.141960, 13.460319)",
      "latitude": 58.14196,
      "longitude": 13.460319,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.141960,13.460319",
      "aggregate_score": 0.5862,
      "preparation_posture": "identity_resolution_required",
      "identity_posture": "duplicate_name_resolution_required",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 1.0,
      "lake_area_km2": 0.603122,
      "scenario_consistency_posture": "high",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 3,
        "20km": 4,
        "30km": 5,
        "40km": 9,
        "50km": 8
      },
      "scenario_top20_presence_count": 6,
      "scenario_best_rank": 3,
      "scenario_mean_rank": 5.33,
      "representative_source_record": "svar-lakes:644831-136156",
      "lake_registry_id": "644831-136156",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 2,
      "sead_sites_20km": 15,
      "human_localities_10km": 7,
      "human_samples_10km": 99,
      "human_localities_20km": 9,
      "human_samples_20km": 126,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [
        "duplicate_sweden_name"
      ],
      "required_actions": [
        "confirm the exact Swedish lake registry match before field planning",
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 2,
      "fieldwork_shortlist_score": 0.5775,
      "aggregate_rank": 4,
      "lake_label": "Hornborgasj\u00f6n",
      "latitude": 58.317269,
      "longitude": 13.549447,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.317269,13.549447",
      "aggregate_score": 0.5037,
      "preparation_posture": "context_review_ready",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.94,
      "lake_area_km2": 27.925549,
      "scenario_consistency_posture": "high",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 16,
        "20km": 1,
        "30km": 4,
        "40km": 8,
        "50km": 22
      },
      "scenario_top20_presence_count": 5,
      "scenario_best_rank": 1,
      "scenario_mean_rank": 9.17,
      "representative_source_record": "svar-lakes:646918-136677",
      "lake_registry_id": "646918-136677",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 19,
      "human_localities_10km": 2,
      "human_samples_10km": 32,
      "human_localities_20km": 11,
      "human_samples_20km": 158,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 3,
      "fieldwork_shortlist_score": 0.5289,
      "aggregate_rank": 6,
      "lake_label": "R\u00f6sj\u00f6n (58.256624, 13.380976)",
      "latitude": 58.256624,
      "longitude": 13.380976,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.256624,13.380976",
      "aggregate_score": 0.4651,
      "preparation_posture": "identity_resolution_required",
      "identity_posture": "duplicate_name_resolution_required",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 1.0,
      "lake_area_km2": 0.956929,
      "scenario_consistency_posture": "high",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 46,
        "20km": 3,
        "30km": 3,
        "40km": 3,
        "50km": 15
      },
      "scenario_top20_presence_count": 5,
      "scenario_best_rank": 3,
      "scenario_mean_rank": 12.67,
      "representative_source_record": "svar-lakes:646105-135775",
      "lake_registry_id": "646105-135775",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 13,
      "human_localities_10km": 2,
      "human_samples_10km": 15,
      "human_localities_20km": 10,
      "human_samples_20km": 127,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [
        "duplicate_sweden_name"
      ],
      "required_actions": [
        "confirm the exact Swedish lake registry match before field planning",
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 4,
      "fieldwork_shortlist_score": 0.4653,
      "aggregate_rank": 10,
      "lake_label": "Alasj\u00f6n",
      "latitude": 59.686908,
      "longitude": 17.72259,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=59.686908,17.722590",
      "aggregate_score": 0.4053,
      "preparation_posture": "context_review_ready",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.191045,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "high",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 5,
        "20km": 12,
        "30km": 57,
        "40km": 165,
        "50km": 250
      },
      "scenario_top20_presence_count": 3,
      "scenario_best_rank": 5,
      "scenario_mean_rank": 83.17,
      "representative_source_record": "svar-lakes:661929-160809",
      "lake_registry_id": "661929-160809",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 37,
      "human_localities_10km": 7,
      "human_samples_10km": 24,
      "human_localities_20km": 10,
      "human_samples_20km": 31,
      "domesticated_animal_localities_50km": 1,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 5,
      "fieldwork_shortlist_score": 0.4639,
      "aggregate_rank": 9,
      "lake_label": "Vartoftasj\u00f6n",
      "latitude": 58.086896,
      "longitude": 13.66973,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.086896,13.669730",
      "aggregate_score": 0.4186,
      "preparation_posture": "evidence_screen_only",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.154654,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 81,
        "20km": 5,
        "30km": 32,
        "40km": 22,
        "50km": 11
      },
      "scenario_top20_presence_count": 3,
      "scenario_best_rank": 5,
      "scenario_mean_rank": 26.67,
      "representative_source_record": "svar-lakes:644206-137422",
      "lake_registry_id": "644206-137422",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 2,
      "sead_sites_20km": 15,
      "human_localities_10km": 2,
      "human_samples_10km": 2,
      "human_localities_20km": 9,
      "human_samples_20km": 126,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 6,
      "fieldwork_shortlist_score": 0.4309,
      "aggregate_rank": 14,
      "lake_label": "Lejondalssj\u00f6n",
      "latitude": 59.541673,
      "longitude": 17.687602,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=59.541673,17.687602",
      "aggregate_score": 0.3767,
      "preparation_posture": "evidence_screen_only",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 1.0,
      "lake_area_km2": 2.717067,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "high",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 4,
        "20km": 37,
        "30km": 79,
        "40km": 126,
        "50km": 224
      },
      "scenario_top20_presence_count": 2,
      "scenario_best_rank": 4,
      "scenario_mean_rank": 80.67,
      "representative_source_record": "svar-lakes:660523-160785",
      "lake_registry_id": "660523-160785",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 2,
      "sead_sites_20km": 26,
      "human_localities_10km": 7,
      "human_samples_10km": 24,
      "human_localities_20km": 8,
      "human_samples_20km": 25,
      "domesticated_animal_localities_50km": 1,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 7,
      "fieldwork_shortlist_score": 0.4259,
      "aggregate_rank": 11,
      "lake_label": "Ullstorpasj\u00f6n",
      "latitude": 58.220133,
      "longitude": 13.269162,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.220133,13.269162",
      "aggregate_score": 0.3983,
      "preparation_posture": "evidence_screen_only",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.290248,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 192,
        "20km": 9,
        "30km": 12,
        "40km": 21,
        "50km": 28
      },
      "scenario_top20_presence_count": 3,
      "scenario_best_rank": 9,
      "scenario_mean_rank": 45.5,
      "representative_source_record": "svar-lakes:645824-135079",
      "lake_registry_id": "645824-135079",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 2,
      "sead_sites_20km": 10,
      "human_localities_10km": 1,
      "human_samples_10km": 4,
      "human_localities_20km": 7,
      "human_samples_20km": 99,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 8,
      "fieldwork_shortlist_score": 0.4054,
      "aggregate_rank": 30,
      "lake_label": "Valloxen",
      "latitude": 59.736717,
      "longitude": 17.842415,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=59.736717,17.842415",
      "aggregate_score": 0.338,
      "preparation_posture": "context_review_ready",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 1.0,
      "lake_area_km2": 2.786793,
      "scenario_consistency_posture": "low",
      "sead_context_posture": "high",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 101,
        "20km": 10,
        "30km": 52,
        "40km": 141,
        "50km": 158
      },
      "scenario_top20_presence_count": 1,
      "scenario_best_rank": 10,
      "scenario_mean_rank": 82,
      "representative_source_record": "svar-lakes:662383-161313",
      "lake_registry_id": "662383-161313",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 35,
      "human_localities_10km": 1,
      "human_samples_10km": 4,
      "human_localities_20km": 10,
      "human_samples_20km": 31,
      "domesticated_animal_localities_50km": 1,
      "ambiguity_flags": [],
      "required_actions": [
        "stress-test this candidate against alternative distance-band scenarios before field planning",
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 9,
      "fieldwork_shortlist_score": 0.3938,
      "aggregate_rank": 33,
      "lake_label": "Yddingesj\u00f6n",
      "latitude": 55.544521,
      "longitude": 13.251816,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=55.544521,13.251816",
      "aggregate_score": 0.3328,
      "preparation_posture": "context_review_ready",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 1.0,
      "lake_area_km2": 1.960541,
      "scenario_consistency_posture": "low",
      "sead_context_posture": "high",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 51,
        "20km": 26,
        "30km": 48,
        "40km": 114,
        "50km": 223
      },
      "scenario_top20_presence_count": 0,
      "scenario_best_rank": 26,
      "scenario_mean_rank": 82.5,
      "representative_source_record": "svar-lakes:616141-133891",
      "lake_registry_id": "616141-133891",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 88,
      "human_localities_10km": 2,
      "human_samples_10km": 2,
      "human_localities_20km": 9,
      "human_samples_20km": 12,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [],
      "required_actions": [
        "stress-test this candidate against alternative distance-band scenarios before field planning",
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 10,
      "fieldwork_shortlist_score": 0.387,
      "aggregate_rank": 15,
      "lake_label": "Vagnsj\u00f6n (58.405652, 13.628989)",
      "latitude": 58.405652,
      "longitude": 13.628989,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.405652,13.628989",
      "aggregate_score": 0.3725,
      "preparation_posture": "identity_resolution_required",
      "identity_posture": "duplicate_name_resolution_required",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.211304,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 22,
        "20km": 82,
        "30km": 10,
        "40km": 16,
        "50km": 37
      },
      "scenario_top20_presence_count": 3,
      "scenario_best_rank": 10,
      "scenario_mean_rank": 30.33,
      "representative_source_record": "svar-lakes:647762-137280",
      "lake_registry_id": "647762-137280",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 17,
      "human_localities_10km": 2,
      "human_samples_10km": 32,
      "human_localities_20km": 2,
      "human_samples_20km": 32,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [
        "duplicate_sweden_name"
      ],
      "required_actions": [
        "confirm the exact Swedish lake registry match before field planning",
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 11,
      "fieldwork_shortlist_score": 0.3868,
      "aggregate_rank": 17,
      "lake_label": "Husg\u00e4rdessj\u00f6n",
      "latitude": 58.39314,
      "longitude": 13.605399,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.393140,13.605399",
      "aggregate_score": 0.3711,
      "preparation_posture": "context_review_ready",
      "identity_posture": "registry_clear",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.326343,
      "scenario_consistency_posture": "medium",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 21,
        "20km": 88,
        "30km": 8,
        "40km": 14,
        "50km": 30
      },
      "scenario_top20_presence_count": 3,
      "scenario_best_rank": 8,
      "scenario_mean_rank": 29.67,
      "representative_source_record": "svar-lakes:647609-137150",
      "lake_registry_id": "647609-137150",
      "lake_name_status": "water_surface_name",
      "coordinate_resolution_method": "svar_polygon_representative_point",
      "direct_pollen_source_count": 0,
      "time_aware_direct_pollen_records": 0,
      "evidence_families_20km": 3,
      "sead_sites_20km": 17,
      "human_localities_10km": 2,
      "human_samples_10km": 32,
      "human_localities_20km": 2,
      "human_samples_20km": 32,
      "domesticated_animal_localities_50km": 0,
      "ambiguity_flags": [],
      "required_actions": [
        "inspect linked SEAD records before narrowing the archaeology-context interpretation"
      ]
    },
    {
      "fieldwork_rank": 12,
      "fieldwork_shortlist_score": 0.3868,
      "aggregate_rank": 18,
      "lake_label": "Bysj\u00f6n (58.405310, 13.608083)",
      "latitude": 58.40531,
      "longitude": 13.608083,
      "google_maps_url": "https://www.google.com/maps/search/?api=1&query=58.405310,13.608083",
      "aggregate_score": 0.371,
      "preparation_posture": "identity_resolution_required",
      "identity_posture": "duplicate_name_resolution_required",
      "sampling_posture": "sampling_lake_candidate",
      "human_context_posture": "core_human_adna_context",
      "sampling_fit": 0.868,
      "lake_area_km2": 0.237927,
      "scenario_consistency_posture": "high",
      "sead_context_posture": "medium",
      "palaeopen_alignment_posture": "low",
      "scenario_ranks": {
        "10km": 20,
        "20km": 87,
        "30km": 7,
        "40km": 12,
        "50km": 35
      },
      "scenario_top20_presence_count": 4,
      "scenario_best_rank": 7,
      "scenario_mean_rank": 29.83,
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}