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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 council_district. Clear

Datasets with the most fields left to read

Showing 1–50 of 293
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
2018 DOE High School Directory vw9i-7mzq	462	137 30%	7	325	5	See every field
Energy and Water Data Disclosure for Local Law 84 2018 (Data for Calendar Year 2017) 4t62-jm4m	256	7 3%	2	249	2	See every field
Energy and Water Data Disclosure for Local Law 84 2014 (Data for Calendar Year 2013) yr5p-wjer	255	7 3%	2	248	2	See every field
Energy and Water Data Disclosure for Local Law 84 2020 (Data for Calendar Year 2019) wcm8-aq5w	254	7 3%	2	247	2	See every field
2018 DOE Middle School Directory 6kcb-9g8d	251	8 3%	4	243	4	See every field
Energy and Water Data Disclosure for Local Law 84 2022 (Data for Calendar Year 2021) 7x5e-2fxh	249	6 2%	2	243	2	See every field
Energy and Water Data Disclosure for Local Law 84 2021 (Data for Calendar Year 2020) usc3-8zwd	250	17 7%	13	233	2	See every field
NYC Building Energy and Water Data Disclosure for Local Law 84 2023 to Present (Data for Calendar Year 2022-Present) 5zyy-y8am	265	57 22%	55	208	4	See every field
Energy and Water Data Disclosure for Local Law 84 2012 (Data for Calendar Year 2011) k7nh-aufb	210	6 3%	2	204	2	See every field
Energy and Water Data Disclosure for Local Law 84 2013 (Data for Calendar Year 2012) r6ub-zhff	201	8 4%	3	193	3	See every field
Energy and Water Data Disclosure for Local Law 84 2011 (Data for Calendar Year 2010) kswi-37bp	164	8 5%	3	156	3	See every field
2019 DOE High School Directory uq7m-95z8	462	344 74%	26	118	5	See every field
2018 Pre-K School Directory xck4-5xd5	85	12 14%	7	73	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
Primary Land Use Tax Lot Output (PLUTO) 64uk-42ks	108	38 35%	20	70	5	See every field
DOE High School Directory 2013-2014 u553-m549	82	16 20%	7	66	7	See every field
2016 DOE High School Directory 7crd-d9xh	67	8 12%	5	59	5	See every field
2014 - 2015 DOE High School Directory n3p6-zve2	69	14 20%	5	55	5	See every field
Energy Usage From DOE Buildings mq6n-s45c	62	8 13%	5	54	5	See every field
Historical DOB Permit Issuance bty7-2jhb	60	8 13%	3	52	3	See every field
2017 DOE High School Directory s3k6-pzi2	462	412 89%	29	50	5	See every field
Suitability of City-Owned and Leased Property for Urban Agriculture (LL 48 of 2011) 4e2n-s75z	75	26 35%	18	49	7	See every field
Housing Database Project Level Files br6q-ssj3	68	19 28%	11	49	6	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
NYCHA Development Data Book evjd-dqpz	52	7 13%	5	45	1	See every field
SBS Certified Business List ci93-uc8s	56	13 23%	9	43	4	See every field
HISTORICAL Sidewalk Café Licenses and Applications qcdj-rwhu	47	4 9%	3	43	3	See every field
Vision Zero Base Report ph7v-u5f3	55	14 25%	2	41	2	See every field
Commercial Bicycle Unit Inspections (Historical) tg3t-nh4h	51	11 22%	8	40	6	See every field
Department for the Aging (NYC Aging) - Senior Center Local Law 140 Provider Data - FY 2020 ygfr-ij6t	49	9 18%	5	40	5	See every field
2020 DOE Middle School Directory fdpt-nzk4	464	425 92%	10	39	6	See every field
DOF: Condominium Comparable Rental Income –Staten Island – FY 2009/2010 wv4q-e75v	46	7 15%	5	39	5	See every field
DOB NOW: Build – Approved Permits rbx6-tga4	46	8 17%	4	38	4	See every field
Self-Reported Drinking Water Tank Inspection Results gjm4-k24g	47	11 23%	7	36	4	See every field
DOF: Condominium Comparable Rental Income – Staten Island – FY 2008/2009 cyfw-hfqk	46	11 24%	5	35	5	See every field
DOF: Condominium Comparable Rental Income – Bronx – FY 2008/2009 en2c-j6tw	46	11 24%	5	35	5	See every field
DOF: Condominium Comparable Rental Income – Queens – FY 2008/2009 m59i-mqex	46	11 24%	5	35	5	See every field
DOF: Condominium Comparable Rental Income – Brooklyn – FY 2008/2009 rmv8-86p4	46	11 24%	4	35	4	See every field
NYC Clean Heat Dataset (Historical) 8isn-pgv3	42	8 19%	4	34	4	See every field
BIC Complaints Inquiries p2d7-vcsb	42	8 19%	3	34	3	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
ACS Community Partners 9hyh-zkx9	39	7 18%	4	32	4	See every field
Energy and Water Data Disclosure for Local Law 84 2015 (Data for Calendar Year 2014) nbun-wekj	259	228 88%	5	31	2	See every field
Property Valuation and Assessment Data yjxr-fw8i	45	14 31%	5	31	4	See every field
Multi Agency Response to Community Hotspot (MARCH) Inspections b84a-xy2t	35	4 11%	2	31	2	See every field
NYC Parks Monuments 6rrm-vxj9	34	3 9%	1	31	1	See every field
Energy and Water Data Disclosure for Local Law 84 2017 (Data for Calendar Year 2016) utpj-74fz	262	232 89%	8	30	2	See every field
2015 Street Tree Census - Tree Data uvpi-gqnh	45	15 33%	11	30	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.