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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

Datasets with the most fields left to read

Showing 101–150 of 1,117
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
Housing Maintenance Code Violations wvxf-dwi5	41	34 83%	16	7	3	See every field
Facilities Database ji82-xba5	38	31 82%	17	7	4	See every field
Current Solicitations 3khw-qi8f	37	30 81%	7	7	1	See every field
DOHMH Childcare Center Inspections (Historical) dsg6-ifza	34	27 79%	11	7	3	See every field
LinkNYC New Site Permit Applications xp25-gxux	34	27 79%	13	7	4	See every field
Off-Year and Special Elections Campaign Expenditure cgcg-w2ys	32	25 78%	5	7	0	See every field
LPC Permit Application Information dpm2-m9mq	32	25 78%	6	7	1	See every field
Open Market Order (OMO) Charges mdbu-nrqn	32	25 78%	5	7	3	See every field
Campaign Expenditures qxzj-vkn2	32	25 78%	6	7	0	See every field
Weights, Measures, and Other Tests 8fei-z6rz	31	24 77%	9	7	5	See every field
DOB Certificate Of Occupancy bs8b-p36w	30	23 77%	9	7	3	See every field
Motor Vehicle Collisions - Crashes h9gi-nx95	29	22 76%	10	7	1	See every field
2021 DOE Middle School Directory f6s7-vytj	327	321 98%	24	6	5	See every field
Citywide Mobility Survey - Trip 2022 x5mc-2gmi	98	92 94%	0	6	0	See every field
Citywide Mobility Survey - Trip Survey 2019 w9dc-u4ik	77	71 92%	2	6	0	See every field
Housing Database Project Level Files br6q-ssj3	68	62 91%	23	6	6	See every field
Forestry Service Requests mu46-p9is	51	45 88%	12	6	2	See every field
Parking Violations Issued - Fiscal Year 2027 pvqr-7yc4	44	38 86%	1	6	0	See every field
NYCHA Resident Data Book Summary 5r5y-pvs3	43	37 86%	3	6	0	See every field
Parking Violations Issued - Fiscal Year 2020 p7t3-5i9s	43	37 86%	1	6	0	See every field
Bike Share Inspections (Historical) 5uei-swth	42	36 86%	0	6	0	See every field
NYPD Complaint Data Current (Year To Date) 5uac-w243	41	35 85%	13	6	2	See every field
DOB NOW: Electrical Permit Details xmmq-y7za	40	34 85%	1	6	0	See every field
License Applications ptev-4hud	35	29 83%	9	6	3	See every field
Asbestos Control Program (ACP7) vq35-j9qm	35	29 83%	10	6	3	See every field
Designated and Calendared Buildings and Sites ncre-qhxs	34	28 82%	11	6	2	See every field
NYC Wi-Fi Hotspot Locations yjub-udmw	34	28 82%	15	6	5	See every field
Storefronts Reported Vacant or Not 92iy-9c3n	31	25 81%	8	6	2	See every field
City Bench Locations (Historical) kuxa-tauh	31	25 81%	9	6	2	See every field
Financial Services for NYCHA Residents by Borough - Local Law 163 2c9f-2ta9	30	24 80%	21	6	0	See every field
Forestry Inspections 4pt5-3vv4	30	24 80%	3	6	0	See every field
Street and Highway Capital Reconstruction Projects - Intersection 97nd-ff3i	30	24 80%	10	6	2	See every field
Real Time Passenger Information Sign Locations g9jx-npbk	30	24 80%	8	6	3	See every field
2017 - 2018 Schools NYPD Crime Data Report kwvk-z7i9	30	24 80%	2	6	1	See every field
Pupil Transportation General & Special Education Student Bussing by Vendors & Routes updated 21-993 r2j4-rc64	29	23 79%	12	6	0	See every field
ARCHIVED_NYPD Shooting Incident Data (Year To Date) 98wc-x49t	26	20 77%	10	6	2	See every field
Broadband Adoption Basic Indicators 6wy6-6agj	25	19 76%	1	6	1	See every field
Cooking Gas Consumption And Cost (2010 - Sep 2025) avhb-5jhc	25	19 76%	4	6	1	See every field
New York City Bike Routes mzxg-pwib	25	19 76%	3	6	1	See every field
Restrictive Declaration Sites cmni-fvnx	24	18 75%	1	6	0	See every field
2016 DOE High School Programs ge8j-uqbf	24	18 75%	4	6	0	See every field
2023 High Volume FHV Trip Data u253-aew4	24	18 75%	5	6	0	See every field
2015-2016 Arts Survey Data c4vk-jvzy	390	385 99%	3	5	0	See every field
ENDGBV: Family Justice Centers: Supporting Our Foreign Born Clients Report wr2n-ag8h	98	93 95%	0	5	0	See every field
NYC Free Tax Prep Sites 5kqf-fg3n	77	72 94%	11	5	3	See every field
DOF: Cooperative Comparable Rental Income – Brooklyn – FY 2011/2012 irhv-jqz7	69	64 93%	5	5	3	See every field
DOF: Cooperative Comparable Rental Income (Citywide) myei-c3fa	60	55 92%	24	5	0	See every field
2005 Street Tree Census 29bw-z7pj	59	54 92%	12	5	3	See every field
Forestry Planting Spaces 82zj-84is	40	35 88%	6	5	2	See every field
NYPD Complaint Data Historic qgea-i56i	40	35 88%	13	5	2	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.