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Coverage

20,438 of 56,681 columns decided — 36.1% · 4,487 bound (7.9%) · 36,243 still unread

Bound: 4,487; 7.9%; a concept was found and asserted for the column.
Refused: 10,870; 19.2%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 5,081; 9.0%; read, but the evidence did not settle it.
Unanalysed: 36,243; 63.9%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 10:53 AM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 36,243 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

Gaps in the data behind this page

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
603 of the 3,026 datasets in the catalog list no columns at all.

Source last observed Oct 10, 2026, 10:53 AM.

Where each note comes from

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
36,243 / 56,681
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/coverage/unanalysed
603 of the 3,026 datasets in the catalog list no columns at all.
603 / 3,026
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/catalog/datasets_no_inventory

These pages state their own gaps: /datasets, /freshness, /scorecard, /scorecard/fields, /analyses, /ontology, /graph, /alerts, any topic page under /domains.

What we have understood

Freshness above is about the data being current. This is about the data being understood: how many of the catalogue's fields carry a meaning we can act on, which datasets are still waiting, and how far the joinable web reaches.

← Citywide scorecard

Datasets by how much of them we have read

Datasets with the most fields left to read

Showing 1–50 of 1,308
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
2018 DOE High School Directory vw9i-7mzq	462	137 30%	7	325	5	See every field
Energy and Water Data Disclosure for Local Law 84 2018 (Data for Calendar Year 2017) 4t62-jm4m	256	7 3%	2	249	2	See every field
Energy and Water Data Disclosure for Local Law 84 2014 (Data for Calendar Year 2013) yr5p-wjer	255	7 3%	2	248	2	See every field
Energy and Water Data Disclosure for Local Law 84 2020 (Data for Calendar Year 2019) wcm8-aq5w	254	7 3%	2	247	2	See every field
2018 DOE Middle School Directory 6kcb-9g8d	251	8 3%	4	243	4	See every field
Energy and Water Data Disclosure for Local Law 84 2022 (Data for Calendar Year 2021) 7x5e-2fxh	249	6 2%	2	243	2	See every field
Energy and Water Data Disclosure for Local Law 84 2021 (Data for Calendar Year 2020) usc3-8zwd	250	17 7%	13	233	2	See every field
NYC Building Energy and Water Data Disclosure for Local Law 84 2023 to Present (Data for Calendar Year 2022-Present) 5zyy-y8am	265	57 22%	55	208	4	See every field
Energy and Water Data Disclosure for Local Law 84 2012 (Data for Calendar Year 2011) k7nh-aufb	210	6 3%	2	204	2	See every field
Energy and Water Data Disclosure for Local Law 84 2013 (Data for Calendar Year 2012) r6ub-zhff	201	8 4%	3	193	3	See every field
Energy and Water Data Disclosure for Local Law 84 2011 (Data for Calendar Year 2010) kswi-37bp	164	8 5%	3	156	3	See every field
New York City Work and Family Leave Survey (WFLS) 2014 grnn-mvqe	153	4 3%	3	149	0	See every field
Lot Cleaning Dispositions (No Longer Maintained) r4c5-ndkx	124	2 2%	1	122	1	See every field
Property Valuation and Assessment data Tax Classes 2,3,4 kevu-8hby	117	2 2%	1	115	1	See every field
Property Valuation and Assessment Data Tax Class 1 m8p6-tp4b	117	2 2%	1	115	1	See every field
Harbor Water Quality 5uug-f49n	100	1 1%	0	99	0	See every field
DOB NOW: Build – Job Application Filings w9ak-ipjd	95	8 8%	2	87	2	See every field
DOB Job Application Filings ic3t-wcy2	95	10 11%	6	85	2	See every field
2018 Pre-K School Directory xck4-5xd5	85	12 14%	7	73	5	See every field
OATH Hearings Division Case Status jz4z-kudi	74	1 1%	0	73	0	See every field
Internet Master Plan: Adoption and Infrastructure Data by Neighborhood fg5j-q5nk	77	6 8%	4	71	1	See every field
Primary Land Use Tax Lot Output (PLUTO) 64uk-42ks	108	38 35%	20	70	5	See every field
DOB NOW: Electrical Permit Applications dm9a-ab7w	83	13 16%	6	70	2	See every field
DOB NOW: Build Elevator Permit Applications kfp4-dz4h	82	14 17%	5	68	2	See every field
Property Exemption Detail muvi-b6kx	70	2 3%	2	68	1	See every field
DOE High School Directory 2013-2014 u553-m549	82	16 20%	7	66	7	See every field
NYC Free Tax Prep Sites 5kqf-fg3n	77	14 18%	5	63	3	See every field
Business Improvement District (BID) Trends Report (FY25) hzd8-k2vv	64	1 2%	1	63	1	See every field
Centerline inkn-q76z	64	2 3%	1	62	1	See every field
NYCgov Poverty Measure Data (2014) aqqw-n6ec	61	1 2%	1	60	1	See every field
2016 DOE High School Directory 7crd-d9xh	67	8 12%	5	59	5	See every field
DOF: Cooperative Comparable Rental Income – Staten Island – FY 2011/2012 2zbg-i8fx	69	11 16%	4	58	4	See every field
DOF: Cooperative Comparable Rental Income – Brooklyn – FY 2011/2012 irhv-jqz7	69	11 16%	3	58	3	See every field
DOF: Cooperative Comparable Rental Income (Citywide) myei-c3fa	60	4 7%	4	56	0	See every field
Traffic Signal and All-Way Stop Study Requests w76s-c5u4	57	1 2%	0	56	0	See every field
2014 - 2015 DOE High School Directory n3p6-zve2	69	14 20%	5	55	5	See every field
Interagency Coordination and Construction Permits Data (MOSYS) wye7-nyek	56	1 2%	0	55	0	See every field
Energy Usage From DOE Buildings mq6n-s45c	62	8 13%	5	54	5	See every field
Historical DOB Permit Issuance bty7-2jhb	60	8 13%	3	52	3	See every field
DOB Permit Issuance ipu4-2q9a	60	8 13%	4	52	2	See every field
COVID-19 Daily Counts of Cases, Hospitalizations, and Deaths rc75-m7u3	55	3 5%	3	52	0	See every field
NYC Women's Resource Network Database pqg4-dm6b	64	13 20%	1	51	1	See every field
Campaign Contributions rjkp-yttg	54	3 6%	0	51	0	See every field
Doing Business Contributions Summary fbkk-n4e3	52	1 2%	0	51	0	See every field
Off-Year and Special Elections Contribution kgzj-pjna	52	1 2%	0	51	0	See every field
Suitability of City-Owned and Leased Property for Urban Agriculture (LL 48 of 2011) 4e2n-s75z	75	26 35%	18	49	7	See every field
Housing Database Project Level Files br6q-ssj3	68	19 28%	11	49	6	See every field
DOB Cellular Antenna Filings iz2q-9x8d	55	7 13%	4	48	2	See every field
Bikes in Buildings Requests scjj-6yaf	54	6 11%	5	48	5	See every field
311 Service Requests for 2009 3rfa-3xsf	57	10 18%	0	47	0	See every field

The web of datasets and fields

A line means a dataset carries a field tagged with a shared vocabulary term. Two datasets on the same term speak the same language about it, which is what makes a cross-dataset question possible. Sharing a term is not the same as a working join — the dataset page says whether a specific pair compiles.

Bipartite. A dimension node is a conformed-dimension family; a dataset node is a catalog dataset; an edge means that dataset carries at least one column tagged with that dimension, and names the columns that carry it.

No field list yet: We hold no columns for these at all.
Nothing read yet: We hold their columns and have decided none of them.
Under half read: Fewer than half their fields carry a verdict.
Half read: At least half their fields carry a verdict.
Most read: At least three quarters of their fields carry a verdict.
Every field decided: Every field carries a verdict — which does not mean every field is understood.

How many of an edge's tagging columns carry a method that actually read something. Zero means the edge rests entirely on carried lexical tags.

Two datasets on the same dimension node share a vocabulary, which is weaker than a join. GET /api/datasets/{fourFour}/bindings/{partner} decides whether a specific pair compiles; executing it additionally needs both marts present.