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Coverage

56,681 of 56,681 columns decided — 100.0% · 12,642 bound (22.3%) · 0 still unread

Bound: 12,642; 22.3%; a concept was found and asserted for the column.
Refused: 32,953; 58.1%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 11,086; 19.6%; read, but the evidence did not settle it.
Unanalysed: 0; 0.0%; 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, 8:26 PM

3,026 datasets, 56,681 catalogued fields, 0 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

2012 2013 Co- Location Memorandums

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Fields catalogued

Understood

Checked, no match

Nobody has looked

Every field decided — Every field carries a verdict — which does not mean every field is understood.

Every field in this dataset

Covered and uncovered alike, in the order the publisher lists them. A field with no verdict is one nobody has looked at yet.

Field	Type	What we know	Meaning	How it was decided	Shared term
geo_district_ofbuilding_s Geo. District ofBuilding(s)	Text	Not enough to tell	—	value_domain_read	—
dbn DBN	Text	Not enough to tell	—	value_domain_read	—
borough Borough	Text	Understood	place.borough Borough	value_domain_read	borough
school_name School Name	Text	Checked, no match	—	value_domain_read smallest=47 The American Sign Languag largest=Young Women's Leadership Sch	—
building_id_s Building ID(s)	Text	Checked, no match	—	value_domain_read smallest=K002 largest=X973	—