{
  "key": "est_chlorophyll_a_cruise_corr",
  "slug": "est_chlorophyll_a_cruise_corr",
  "label": "Est. chlorophyll-a cruise-corrected",
  "description": "Est. chlorophyll-a cruise-corrected",
  "units": "ug/L",
  "units_nerc_p06": "http://vocab.nerc.ac.uk/collection/P06/current/UGPL/",
  "nerc_p01": null,
  "category": {
    "key": null,
    "name": "Productivity & Pigments",
    "icon": "cat-productivity",
    "realm": "env",
    "order": 4
  },
  "is_unified": false,
  "derivation": "Fluorometer voltage converted to chlorophyll-a by regression against bottle chlorophyll-a, applied to the 1 m bin-averaged voltage over 0-200 m ONLY - undefined deeper by construction, not by absence of data. Bottle-corrected with ONE regression per cruise, fitted from 4-second-averaged sensor data against all the cruise's bottles (n ~ 1400, fliers omitted).",
  "climatology": true,
  "bounds": {
    "valid_min": 0,
    "valid_max": 1000,
    "declared_by": [
      "est_chlorophyll_a_cruise_corr"
    ]
  },
  "totals": {
    "n_values": 320229,
    "n_samples": 9225,
    "n_roots": 9225,
    "n_datasets": 1,
    "year_min": 1993,
    "year_max": 2025,
    "depth_min_m": 1,
    "depth_max_m": 200
  },
  "series": [
    {
      "measurement_type": "est_chlorophyll_a_cruise_corr",
      "dataset_key": "calcofi_ctd-cast",
      "source_column": "est_chl_cruise_corr",
      "qual_column": null,
      "description": "Est. chlorophyll-a cruise-corrected",
      "units": "ug/L",
      "nerc_p01": null,
      "is_canonical": true,
      "n_values": 320229,
      "n_samples": 9225,
      "n_roots": 9225,
      "n_cells": 96,
      "n_cruises": 128,
      "year_min": 1993,
      "year_max": 2025,
      "depth_min_m": 1,
      "depth_max_m": 200,
      "years": {
        "1993": 5790,
        "1994": 11402,
        "1995": 8531,
        "1996": 12363,
        "1997": 10210,
        "1998": 12127,
        "1999": 9661,
        "2000": 10089,
        "2001": 8598,
        "2002": 9850,
        "2003": 10081,
        "2004": 9032,
        "2005": 9042,
        "2006": 11961,
        "2007": 10745,
        "2008": 11088,
        "2009": 10681,
        "2010": 9848,
        "2011": 8586,
        "2012": 9765,
        "2013": 7759,
        "2014": 8376,
        "2015": 13160,
        "2016": 13096,
        "2017": 10007,
        "2018": 7746,
        "2019": 7934,
        "2020": 7913,
        "2021": 9461,
        "2022": 9349,
        "2023": 10786,
        "2024": 7025,
        "2025": 8167
      },
      "months": [
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        20793,
        11090,
        57089,
        2557,
        3927,
        56739,
        25626,
        5506,
        37809,
        42896,
        0
      ],
      "depth_bands": {
        "0-10": 16209,
        "10-50": 85185,
        "50-100": 102005,
        "100-200": 111443,
        "200-500": 5387,
        "500-1000": 0,
        "1000-2000": 0,
        "2000+": 0
      },
      "qual": {
        "none": 320229
      },
      "qual_ok_n": 320229,
      "observed": {
        "min": 0,
        "p05": 0.0157,
        "p50": 0.1739,
        "p95": 2.02413999999999,
        "max": 210.7813
      },
      "out_of_bounds": {
        "n": 0,
        "min": null,
        "max": null
      },
      "flags": [
        "no_flag_at_grain",
        "no_p01"
      ]
    }
  ],
  "related": [],
  "flags": [
    "no_label"
  ]
}