{
  "title": "Yellowfin tuna in Louisiana by season, 2014–2025",
  "status": "local review draft; descriptive analysis of LDWF survey estimates",
  "queryDate": "2026-10-21",
  "period": [2014, 2025],
  "query": {
    "source": "Louisiana Department of Wildlife and Fisheries LA Creel Data Query",
    "url": "https://ldwfpublic.wlf.louisiana.gov/lacreelquery/default.aspx",
    "basin": "Offshore",
    "activity": "Charter Boat",
    "species": "Yellowfin Tuna",
    "seasonGroups": {
      "spring": [3, 4, 5],
      "summer": [6, 7, 8],
      "fall": [9, 10, 11],
      "winter_calendar_group": [12, 1, 2]
    }
  },
  "counts": {
    "displayedCatchRows": 129,
    "effortRows": 144,
    "catchRseOver30": 104,
    "catchRseOver50": 34,
    "effortRseOver30": 104,
    "effortRseOver50": 37
  },
  "annualIndex": "For each year/season, summed displayed yellowfin landing estimates divided by summed matching estimated charter angler trips for months with displayed catch rows. Median and range are across complete 3-month season-year groups.",
  "results": [
    {"season":"Spring","completeYearGroups":11,"medianAnnualIndex":0.538,"range":[0.245,1.1],"catchRows":35,"catchRseOver30":31,"catchRseOver50":6,"landings":33824,"matchingEffort":55284,"pooledDescriptiveIndex":0.612},
    {"season":"Summer","completeYearGroups":12,"medianAnnualIndex":0.351,"range":[0.08,0.635],"catchRows":36,"catchRseOver30":20,"catchRseOver50":2,"landings":46158,"matchingEffort":126040,"pooledDescriptiveIndex":0.366},
    {"season":"Fall","completeYearGroups":12,"medianAnnualIndex":0.405,"range":[0.128,0.929],"catchRows":36,"catchRseOver30":31,"catchRseOver50":7,"landings":31245,"matchingEffort":60274,"pooledDescriptiveIndex":0.518},
    {"season":"Winter calendar group","completeYearGroups":1,"catchRows":22,"catchRseOver30":22,"catchRseOver50":19,"comparison":"not made because seasonal coverage is incomplete"}
  ],
  "pairedCompleteYears": {"springIndexGreaterThanSummer":9,"completeSpringSummerPairs":11,"fallIndexGreaterThanSummer":8,"completeFallSummerPairs":12},
  "limits": [
    "Catch and effort are separate survey estimates, not linked trip records.",
    "The index is not a catch probability, standard CPUE estimate, abundance measure, fish-size comparison, causal model or forecast.",
    "Missing catch rows are not assumed to be zero.",
    "No combined uncertainty interval is calculated because the covariance needed to combine catch and effort RSEs is unavailable.",
    "The underlying source export is not preserved here; annual-index.csv and season-summary.csv contain transcribed derived aggregates, and the query is recoverable by its documented filters."
  ]
}