{
  "key": "est_chlorophyll_a_sta_corr",
  "slug": "est_chlorophyll_a_sta_corr",
  "label": "Est. chlorophyll-a station-corrected",
  "description": "Est. chlorophyll-a station-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 a regression fitted PER CAST, from 1 m bin-averaged sensor data against that cast's bottles (n ~ 20, fliers omitted). The providers state station-corrected data are the best. Requires a 500 m cast with roughly ten or more bottles, so a null here is by design on shallow or bottle-poor casts.",
  "climatology": true,
  "bounds": {
    "valid_min": 0,
    "valid_max": 1000,
    "declared_by": [
      "est_chlorophyll_a_sta_corr"
    ]
  },
  "totals": {
    "n_values": 350671,
    "n_samples": 9008,
    "n_roots": 9008,
    "n_datasets": 1,
    "year_min": 1993,
    "year_max": 2025,
    "depth_min_m": 1,
    "depth_max_m": 200
  },
  "series": [
    {
      "measurement_type": "est_chlorophyll_a_sta_corr",
      "dataset_key": "calcofi_ctd-cast",
      "source_column": "est_chl_sta_corr",
      "qual_column": null,
      "description": "Est. chlorophyll-a station-corrected",
      "units": "ug/L",
      "nerc_p01": null,
      "is_canonical": true,
      "n_values": 350671,
      "n_samples": 9008,
      "n_roots": 9008,
      "n_cells": 92,
      "n_cruises": 127,
      "year_min": 1993,
      "year_max": 2025,
      "depth_min_m": 1,
      "depth_max_m": 200,
      "years": {
        "1993": 5790,
        "1994": 11552,
        "1995": 8790,
        "1996": 12318,
        "1997": 11508,
        "1998": 13265,
        "1999": 10732,
        "2000": 10684,
        "2001": 10574,
        "2002": 10732,
        "2003": 11034,
        "2004": 10862,
        "2005": 11290,
        "2006": 11191,
        "2007": 10804,
        "2008": 11059,
        "2009": 11307,
        "2010": 10855,
        "2011": 11479,
        "2012": 9727,
        "2013": 11358,
        "2014": 9346,
        "2015": 13169,
        "2016": 13119,
        "2017": 11382,
        "2018": 9876,
        "2019": 8185,
        "2020": 8359,
        "2021": 9412,
        "2022": 11344,
        "2023": 11787,
        "2024": 9632,
        "2025": 8149
      },
      "months": [
        59778,
        20475,
        13531,
        73199,
        3226,
        4313,
        60486,
        26324,
        5517,
        38617,
        45205,
        0
      ],
      "depth_bands": {
        "0-10": 16532,
        "10-50": 85944,
        "50-100": 104025,
        "100-200": 136830,
        "200-500": 7340,
        "500-1000": 0,
        "1000-2000": 0,
        "2000+": 0
      },
      "qual": {
        "none": 350671
      },
      "qual_ok_n": 350671,
      "observed": {
        "min": 0,
        "p05": 0,
        "p50": 0.1429,
        "p95": 1.39825,
        "max": 84.1368
      },
      "out_of_bounds": {
        "n": 0,
        "min": null,
        "max": null
      },
      "flags": [
        "no_flag_at_grain",
        "no_p01"
      ]
    }
  ],
  "related": [],
  "flags": [
    "no_label"
  ]
}