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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, 2:00 PM

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.

2006_ortho_tile_index

yjgu-spfb

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
shape_len SHAPE_LEN	Number	Checked, no match	—	value_profile card=2 nonnull=2049 null=0 smallest=9999.99949731 largest=10000.0000093	—
image IMAGE	Text	Checked, no match	—	value_domain_read smallest=000135 largest=997275	—
curr_err CURR_ERR	Number	Checked, no match	—	value_domain_read top[8]={0×1983; 1×44; 2×13; 3×5; 5×1; 4×1; 6×1; 10×1}	—
the_geom	MultiPolygon	Not enough to tell	—	datatype_projection matched by name, unread	—
curr_round CURR_ROUND	Number	Checked, no match	—	value_domain_read top[8]={0×1983; 1×44; 2×13; 3×5; 5×1; 4×1; 6×1; 10×1}	—
shape_area SHAPE_AREA	Number	Checked, no match	—	value_profile card=2 nonnull=2049 null=0 smallest=6249999.37164 largest=6250000.01164	—
curr_stat CURR_STAT	Number	Checked, no match	—	value_domain_read top[8]={0×1983; 1×44; 2×13; 3×5; 5×1; 4×1; 6×1; 10×1}	—
borough BOROUGH	Number	Checked, no match	—	value_domain_read	—
boro Boro	Number	Understood	place.borough Borough	value_domain_read	borough
curr_user CURR_USER	Text	Checked, no match	—	value_domain_read top[5]={rsklar×1550; dlitvak×193; rcohen×157; kweingart×122; yfriedman×27}	—
objectid OBJECTID	Number	Checked, no match	—	value_profile card=2049 nonnull=2049 null=0 smallest=1 largest=4516	—
number NUMBER_	Number	Checked, no match	—	value_domain_read smallest=000135 largest=997275	—