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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

Filtered to datasets carrying nta. Clear

Datasets with the most fields left to read

Showing 1–50 of 109
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
NYC Free Tax Prep Sites 5kqf-fg3n	77	14 18%	5	63	3	See every field
Bikes in Buildings Requests scjj-6yaf	54	6 11%	5	48	5	See every field
Citywide Public Computer Centers sejx-2gn3	61	15 25%	9	46	6	See every field
SBS Certified Business List ci93-uc8s	56	13 23%	9	43	4	See every field
NewYorkCity_StreetTreeCensus_2005 urik-ndeg	49	7 14%	2	42	2	See every field
Commercial Bicycle Unit Inspections (Historical) tg3t-nh4h	51	11 22%	8	40	6	See every field
2018 - 2019 School Locations 9ck8-hj3u	46	11 24%	1	35	1	See every field
2019 - 2020 School Locations wg9x-4ke6	41	7 17%	1	34	1	See every field
Local Law 44 Disqualified List 9s68-zggy	42	10 24%	8	32	6	See every field
Verified Locations for NYC City-Funded Social Service Contracts - Sites y9si-s7ab	40	8 20%	4	32	4	See every field
2015 Street Tree Census - Tree Data uvpi-gqnh	45	15 33%	11	30	6	See every field
facilities 67g2-p84d	38	8 21%	3	30	3	See every field
Affordable Housing Production by Building hg8x-zxpr	41	12 29%	10	29	6	See every field
Facilities Database ji82-xba5	38	11 29%	7	27	4	See every field
License Applications ptev-4hud	35	8 23%	4	27	3	See every field
DCWP Consumer Complaints nre2-6m2s	33	8 24%	4	25	4	See every field
Housing Database by 2020 NTA kyz5-72x5	27	2 7%	2	25	1	See every field
Voter Analysis 2008-2018 psx2-aqx3	175	152 87%	44	23	3	See every field
Bus Pad Tracking eyb2-p5s8	32	9 28%	4	23	4	See every field
Weights, Measures, and Other Tests 8fei-z6rz	31	8 26%	6	23	5	See every field
Citywide Mobility Survey - Main Survey 2018 jpcp-ic7c	331	309 93%	16	22	3	See every field
Universal Solicitation for Broadband Asset Dataset 2bsr-c6qq	31	9 29%	5	22	5	See every field
2015 Street Tree Census - Blockface Data ju3b-rwpy	30	8 27%	5	22	4	See every field
Housing Maintenance Code Violations NYCHA properties im9z-53hg	35	14 40%	13	21	7	See every field
layer_1 3as9-uee8	30	9 30%	6	21	5	See every field
Value of Energy Cost Savings Program Savings for Businesses bug8-9f3g	30	9 30%	5	21	5	See every field
TreesCount2015Blockfaces mdmw-kuen	30	9 30%	5	21	4	See every field
Issued Licenses w7w3-xahh	31	11 35%	8	20	5	See every field
Sidewalk Dismissal Inspection Tracking p4u2-3jgx	29	9 31%	4	20	4	See every field
DCWP Inspections jzhd-m6uv	28	8 29%	6	20	5	See every field
DOHMH Health Map - Hepatitis nk7g-qeep	28	10 36%	9	18	7	See every field
DARP-ROTOW Enrollment Status of Active Tow Truck Companies q5u8-89nv	27	9 33%	4	18	4	See every field
LinkNYC Kiosk Status (Archived) 8s5k-n45n	25	7 28%	4	18	4	See every field
NYC Citywide Annualized Calendar Sales Update w2pb-icbu	29	12 41%	9	17	6	See every field
Capacity Projects by School a94k-kjys	25	8 32%	6	17	6	See every field
DYCD Program Sites ebkm-iyma	34	18 53%	8	16	3	See every field
DOHMH New York City Restaurant Inspection Results 43nn-pn8j	31	15 48%	6	16	3	See every field
Street Seats (2021 - 2024) 5ar6-qxhs	29	14 48%	11	15	7	See every field
Local Law 44 - Development Team 6anw-twe4	28	13 46%	4	15	2	See every field
Older Adult Center (OAC) Activities fzy4-e84j	26	11 42%	9	15	6	See every field
Register of Community Board Budget Requests vn4m-mk4t	26	11 42%	9	15	7	See every field
Local Law 44 - Building hu6m-9cfi	24	10 42%	8	14	5	See every field
Grant Applications Tracking Table 97zg-4p9t	22	8 36%	4	14	4	See every field
Evaluation and Monitoring Reports for Program Sites 9f5n-qdib	22	8 36%	4	14	4	See every field
NYC Wi-Fi Hotspot Locations yjub-udmw	34	21 62%	11	13	5	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
DOHMH School Cafeteria Inspections (2020-Present) 5ery-qagt	25	13 52%	10	12	5	See every field
NYC Pool Inspections 3kfa-rvez	23	11 48%	6	12	3	See every field
Certification of No Harassment (CONH) Pilot Building List bzxi-2tsw	22	10 45%	7	12	6	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.