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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 241
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
2019 DOE High School Directory uq7m-95z8	462	344 74%	26	118	5	See every field
Energy and Water Data Disclosure for Local Law 84 2019 (Data for Calendar Year 2018) 4tys-3tzj	253	183 72%	8	70	2	See every field
Citywide Mobility Survey - Trip 2024 wgnh-qwsg	110	81 74%	0	29	0	See every field
Intimate Partner Homicide Suicide in New York City (2010-2018) uu87-uz8m	63	37 59%	1	26	0	See every field
DYCD Participant Demographics k9kq-67vm	52	26 50%	15	26	0	See every field
DOF: Condominium Comparable Rental Income – Bronx – FY 2011/2012 3qfc-4tta	70	45 64%	15	25	5	See every field
DOF: Condominium Comparable Rental Income – Manhattan – FY 2011/2012 dvzp-h4k9	70	46 66%	14	24	4	See every field
DOF: Condominium Comparable Rental Income – Queens – FY 2011/2012 jcih-dj9q	70	46 66%	15	24	5	See every field
DOF: Condominium Comparable Rental Income – Staten Island – FY 2011/2012 tkdy-59zg	70	46 66%	15	24	5	See every field
DOF: Condominium Comparable Rental Income – Brooklyn – FY 2011/2012 bss9-579f	60	37 62%	9	23	0	See every field
DOF: Cooperative Comparable Rental Income – Manhattan– FY 2011/2012 m56g-jpua	69	48 70%	3	21	3	See every field
DOF: Cooperative Comparable Rental Income – Queens – FY 2011/2012 sjpy-4cc9	69	48 70%	3	21	3	See every field
DOF: Cooperative Comparable Rental Income – Bronx – FY 2011/2012 yrf7-4wry	69	49 71%	4	20	4	See every field
NYCgov Poverty Measure Data (2010) ya22-5bh7	61	45 74%	1	16	1	See every field
DSNY DonateNYC Directory gkgs-za6m	35	19 54%	7	16	3	See every field
DYCD Program Sites ebkm-iyma	34	18 53%	8	16	3	See every field
Food Scrap Drop-Off Locations in NYC if26-z6xq	32	17 53%	10	15	7	See every field
TLC Authorized Behind The Wheel Providers (Historical) auuc-fqzi	31	17 55%	7	14	4	See every field
Rodent Inspection p937-wjvj	30	16 53%	1	14	0	See every field
NYC Community Boards ruf7-3wgc	30	16 53%	6	14	4	See every field
Speculation Watch List adax-9mit	29	15 52%	8	14	6	See every field
Latin Cultural Organizations 799n-b76v	28	14 50%	4	14	4	See every field
2018 Central Park Squirrel Census - Squirrel Data vfnx-vebw	36	23 64%	5	13	0	See every field
NYC Wi-Fi Hotspot Locations yjub-udmw	34	21 62%	11	13	5	See every field
Storefronts Reported Vacant or Not 92iy-9c3n	31	18 58%	6	13	2	See every field
Building Elevation and Subgrade (BES) bsin-59hv	30	17 57%	9	13	5	See every field
Local Law 7-2018 Qualified Transactions 8wi4-bsy4	29	16 55%	8	13	6	See every field
LockerNYC Locations p36g-evi5	26	13 50%	8	13	3	See every field
DOF: Condominium comparable rental income – Queens - FY 2010/2011 s3zn-tf7c	46	34 74%	9	12	5	See every field
DOF: Condominium Comparable Rental Income – Brooklyn – FY 2009/2010 w6yt-hctp	46	34 74%	8	12	4	See every field
DOF: Cooperative Comparable Rental Income – Staten Island – FY 2008/2009 97iw-vtbx	45	33 73%	8	12	4	See every field
DOF: Cooperative Comparable Rental Income – Staten Island – FY 2009/2010 9sfa-4geq	45	33 73%	8	12	4	See every field
Athletic Facilities qnem-b8re	45	33 73%	4	12	3	See every field
Pharmaceutical and Syringe Drop-Off Locations in NYC edk2-vkjh	30	18 60%	10	12	6	See every field
TLC Driver Education 24 Hour Course Providers wzur-rhz9	29	17 59%	10	12	7	See every field
Financial Empowerment Centers dt2z-amuf	28	16 57%	8	12	5	See every field
DOB NOW: Build – Limited Alteration Applications xxbr-ypig	26	14 54%	8	12	1	See every field
DOHMH School Cafeteria Inspections (2020-Present) 5ery-qagt	25	13 52%	10	12	5	See every field
DOB After Hour Variance Permits g76y-dcqj	24	12 50%	4	12	3	See every field
Overhead Electronic Signs yhdx-itry	24	12 50%	7	12	3	See every field
DOB Certificate Of Occupancy bs8b-p36w	30	19 63%	9	11	3	See every field
Board of Standards and Appeals (BSA) Applications Status yvxd-uipr	30	19 63%	10	11	5	See every field
Capacity Supporting Transportable Classroom Units (TCU) Removals 32rn-zwi7	25	14 56%	11	11	8	See every field
Voting/Poll Sites mifw-tguq	25	14 56%	3	11	3	See every field
DOB Safety Violations 855j-jady	24	13 54%	9	11	4	See every field
NYPD Arrests Data (Historic) 8h9b-rp9u	24	13 54%	8	11	1	See every field
DOB NOW Elevator Safety Compliance e5aq-a4j2	24	13 54%	7	11	3	See every field
NYPD Arrest Data (Year to Date) uip8-fykc	24	13 54%	8	11	1	See every field
NYPD Criminal Court Summons (Historic) sv2w-rv3k	22	11 50%	5	11	1	See every field
TLC Authorized Wheelchair Passenger Assistance Training Providers ayeb-p4mv	27	17 63%	9	10	7	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.