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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, 6:30 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, 6:30 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 51–100 of 1,117
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
Campaign Contributions rjkp-yttg	54	44 81%	6	10	0	See every field
DYCD Participant Demographics k9kq-67vm	52	42 81%	17	10	0	See every field
DOF: Condominium comparable rental income – Staten Island - FY 2010/2011 a5qt-5jpu	46	36 78%	9	10	5	See every field
DOF: Cooperative Comparable Rental Income – Manhattan– FY 2008/2009 3btx-p4av	45	35 78%	8	10	4	See every field
DOF: Cooperative Comparable Rental Income – Brooklyn – FY 2008/2009 62mr-ukqs	45	35 78%	8	10	4	See every field
Public Design Commission Outdoor Public Art Inventory 2pg3-gcaa	43	33 77%	14	10	1	See every field
2016 - 2017 Arts Survey data f33j-ecpr	638	629 99%	6	9	0	See every field
Citywide Mobility Survey - Person 2024 i2im-iqtt	249	240 96%	0	9	0	See every field
Citywide Mobility Survey - Household 2022 dt3g-khpi	105	96 91%	2	9	0	See every field
2018 Pre-K School Directory xck4-5xd5	85	76 89%	17	9	5	See every field
2017 Diversity Report 9-12 - District reri-chf8	64	55 86%	3	9	0	See every field
NYCgov Poverty Measure Data (2014) aqqw-n6ec	61	52 85%	1	9	1	See every field
ENDGBV: The Intersection of Domestic Violence, Race/Ethnicity and Sex ge9t-ywzs	55	46 84%	1	9	0	See every field
DOF: Condominium Comparable Rental Income –Manhattan – FY 2008/2009 956m-xy24	46	37 80%	8	9	4	See every field
2016 - 2017 School Locations ahjc-fdu3	44	35 80%	5	9	0	See every field
2012 - 2013 School Locations emnd-d8ba	44	35 80%	4	9	0	See every field
2014 - 2015 School Locations fxs2-faah	44	35 80%	5	9	0	See every field
2017 - 2018 School Locations p6h4-mpyy	44	35 80%	5	9	0	See every field
Citywide Mobility Survey - Person Survey 2019 6bqn-qdwq	165	157 95%	0	8	0	See every field
Property Valuation and Assessment data Tax Classes 2,3,4 kevu-8hby	117	109 93%	5	8	1	See every field
Property Valuation and Assessment Data Tax Class 1 m8p6-tp4b	117	109 93%	5	8	1	See every field
2013-2014 DOE High School Programs i9pf-sj7c	102	94 92%	2	8	0	See every field
Citywide Mobility Survey - Household 2024 5mb3-padx	97	89 92%	0	8	0	See every field
Suitability of City-Owned and Leased Property for Urban Agriculture (LL 48 of 2011) 4e2n-s75z	75	67 89%	27	8	7	See every field
311 Service Requests for 2006 hy4q-igkk	57	49 86%	12	8	0	See every field
DOB Cellular Antenna Filings iz2q-9x8d	55	47 85%	20	8	2	See every field
DOHMH MenuStat (Historical) qgc5-ecnb	49	41 84%	1	8	0	See every field
Parking Violations Issued - Fiscal Year 2026 9mwx-gamw	44	36 82%	1	8	0	See every field
2013 - 2014 School Locations ac4n-c5re	44	36 82%	5	8	0	See every field
2015 - 2016 School Locations i4ni-6qin	44	36 82%	6	8	0	See every field
Parking Violations Issued - Fiscal Year 2017 2bnn-yakx	43	35 81%	0	8	0	See every field
Parking Violations Issued - Fiscal Year 2015 c284-tqph	43	35 81%	0	8	0	See every field
Street Construction Permits (2013-2021) c9sj-fmsg	39	31 79%	8	8	1	See every field
Privately Owned Public Spaces (POPS) rvih-nhyn	39	31 79%	11	8	5	See every field
AddressPoint uf93-f8nk	35	27 77%	3	8	2	See every field
Citywide Mobility Survey - July 2020 ijzq-5wy8	194	187 96%	0	7	0	See every field
Annual Overweight Load (AOL) Permits ys48-9d3c	88	81 92%	6	7	0	See every field
DOB Sign Application Filings nyis-y4yr	72	65 90%	14	7	1	See every field
2016 DOE High School Directory 7crd-d9xh	67	60 90%	8	7	5	See every field
311 Service Requests for 2009 3rfa-3xsf	57	50 88%	14	7	0	See every field
311 Service Requests for 2007 aiww-p3af	57	50 88%	14	7	0	See every field
DOF: Condominium comparable rental income – Brooklyn - FY 2010/2011 5mw2-hzqx	46	39 85%	8	7	4	See every field
DOF: Condominium Comparable Rental Income – Manhattan – FY 2009/2010 ad4c-mphb	46	39 85%	8	7	4	See every field
DOF: Condominium comparable rental income – Bronx - FY 2010/2011 bawj-6bgn	46	39 85%	9	7	5	See every field
DOF: Condominium Comparable Rental Income – Queens – FY 2009/2010 crbs-vur7	46	39 85%	9	7	5	See every field
DOF: Condominium comparable rental income – Manhattan - FY 2010/2011 ikqj-pyhc	46	39 85%	8	7	4	See every field
DOF: Condominium Comparable Rental Income – Bronx – FY 2009/2010 n2s5-fumm	46	39 85%	9	7	5	See every field
Property Valuation and Assessment Data yjxr-fw8i	45	38 84%	7	7	4	See every field
Parking Violations Issued - Fiscal Year 2022 7mxj-7a6y	43	36 84%	0	7	0	See every field
Parking Violations Issued - Fiscal Year 2025 m5vz-tzqv	43	36 84%	0	7	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.