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Coverage

46,873 of 56,681 columns decided — 82.7% · 9,148 bound (16.1%) · 9,808 still unread

Bound: 9,148; 16.1%; a concept was found and asserted for the column.
Refused: 29,070; 51.3%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 8,655; 15.3%; read, but the evidence did not settle it.
Unanalysed: 9,808; 17.3%; 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, 7:21 PM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 9,808 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

9,808 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, 7:21 PM.

Where each note comes from

9,808 of the 56,681 columns in the coverage ledger have never been analysed.
9,808 / 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

Filtered to datasets carrying council_district. Clear

Datasets with the most fields left to read

Showing 101–150 of 293
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
DOB License Info t8hj-ruu2	22	17 77%	6	5	2	See every field
Bedbug Reporting wz6d-d3jb	21	16 76%	7	5	3	See every field
2019 DOE Kindergarten Admissions Guide urzf-q2g5	20	15 75%	8	5	3	See every field
Update to Submitted State Aid Projects gk83-aa6y	17	12 71%	5	5	4	See every field
Community Board Contact List dy27-rrad	16	11 69%	6	5	6	See every field
Department for the Aging (NYC Aging) - Senior Center Local Law 140 Provider Data - FY 2020 ygfr-ij6t	49	45 92%	26	4	5	See every field
DOF: Condominium Comparable Rental Income – Queens – FY 2008/2009 m59i-mqex	46	42 91%	6	4	5	See every field
2015 Street Tree Census - Tree Data uvpi-gqnh	45	41 91%	14	4	6	See every field
NYC Parks Monuments 6rrm-vxj9	34	30 88%	7	4	1	See every field
Housing Maintenance Code Complaints and Problems ygpa-z7cr	33	29 88%	10	4	3	See every field
Street Seats (2014 - 2019) d83i-6us7	32	28 88%	12	4	5	See every field
Bus Pad Tracking eyb2-p5s8	32	28 88%	7	4	4	See every field
NYC Community Boards ruf7-3wgc	30	26 87%	10	4	4	See every field
Trade Waste Hauler Licensees 867j-5pgi	27	23 85%	10	4	2	See every field
Historical Licenses m4ph-grrm	27	23 85%	10	4	4	See every field
Early Learn Project Sites vmfm-wic2	24	20 83%	12	4	8	See every field
2019 Volunteers Count Report - Boroughs yunp-vs8g	23	19 83%	8	4	4	See every field
Accessible Pedestrian Signal Locations de3m-c5p4	22	18 82%	8	4	3	See every field
Denied TW and Wholesale Market Companies exsg-kpya	22	18 82%	9	4	3	See every field
Court Liaison Contact Sheet tsy7-gcm8	18	14 78%	5	4	4	See every field
Directory Of NYC Cable Providers 48pb-zy2g	17	13 76%	6	4	4	See every field
Application for State Aid 8gpu-s594	17	13 76%	7	4	6	See every field
Broadband Adoption and Infrastructure by Council District cgwq-3ie6	17	13 76%	1	4	1	See every field
Buildings Selected for the Heat Sensor Program (HSP) h4mf-f24e	17	13 76%	7	4	5	See every field
Capacity Projects in Process Site Locations dtmw-avzj	15	11 73%	8	4	7	See every field
Participatory Budgeting Survey Data wa6b-r9jh	15	11 73%	5	4	1	See every field
2016 - 2017 Health Education Instructor Report 9wwd-tgzc	9	5 56%	3	4	1	See every field
2015-16 Local Law 15 Health Data - Licensed Health Instructors qa4d-xc73	9	5 56%	3	4	1	See every field
Citywide Public Computer Centers sejx-2gn3	61	58 95%	11	3	6	See every field
DOB NOW: Build – Approved Permits rbx6-tga4	46	43 93%	18	3	4	See every field
DOF: Condominium Comparable Rental Income – Brooklyn – FY 2008/2009 rmv8-86p4	46	43 93%	6	3	4	See every field
DOF: Condominium Comparable Rental Income –Staten Island – FY 2009/2010 wv4q-e75v	46	43 93%	10	3	5	See every field
Housing Maintenance Code Violations NYCHA properties im9z-53hg	35	32 91%	14	3	7	See every field
Department for the Aging (NYC Aging) - Social Adult Day Care Services 32cj-z7va	33	30 91%	9	3	5	See every field
Leaning Bars (Historical) iaig-3vs5	31	28 90%	11	3	5	See every field
2019 Pre-Kindergarten Admissions Guide fp78-wt5b	30	27 90%	18	3	6	See every field
Historical License Applications vnz6-h2k4	28	25 89%	13	3	4	See every field
Wholesale Markets 87fx-28ei	26	23 88%	9	3	3	See every field
Capacity Projects by School a94k-kjys	25	22 88%	6	3	6	See every field
Cool It! NYC 2020 - Drinking Fountains wxhr-qbhz	25	22 88%	4	3	3	See every field
Housing Litigations 59kj-x8nc	24	21 88%	9	3	4	See every field
Canine Waste Dispensers 5npv-j6gn	23	20 87%	6	3	4	See every field
2020 DOE Kindergarten Admissions Guide 8532-9v5k	22	19 86%	12	3	5	See every field
2021 DOE Kindergarten Admissions Guide e7es-jx5j	22	19 86%	12	3	5	See every field
Local Law 161- Agency Calls to NYPD for Assistance at Job and SNAP Centers ejux-uh6h	21	18 86%	12	3	7	See every field
Legal Defense Trust Expenditures mhyv-6iza	20	17 85%	12	3	6	See every field
Child Abuse Liaisons xxjs-y9yk	20	17 85%	5	3	4	See every field
Center & Service Locations 6smc-7mk6	19	16 84%	6	3	5	See every field
Tourism Grants rma9-fm39	19	16 84%	10	3	5	See every field
SCOUT CORE xrwg-eczf	19	16 84%	9	3	5	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.