Loading…

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, 12:55 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.

EZ Pass Readers July 2024- current

6a2s-2t65

Fields catalogued

Understood

Checked, no match

Nobody has looked

Most read — At least three quarters of their fields carry a verdict.

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
median_tt_sec	Number	Checked, no match	—	value_domain_read card=11280 nonnull=83786908 null=0 smallest=0.0 largest=20662.24	—
sid	Number	Checked, no match	—	dictionary_read A system-managed value that uniquely identifies a record or feature	—
borough	Text	Understood	place.borough Borough	value_domain_read	borough
link_name	Text	Checked, no match	—	dictionary_read The street name/description of the segment.	—
aggregation_period_sec	Number	Checked, no match	—	value_domain_read top[1]={(UTC-05:00) US/Eastern;DST×41}	—
median_speed_fps	Number	Checked, no match	—	value_domain_read card=11280 nonnull=83786908 null=0 smallest=0.0 largest=20662.24	—
polyline	Text	Understood	geometry.line Linear geometry	dictionary_read Google algorithm encoded polyline for the street block(s) and/or segment.	—
n_samples	Number	Checked, no match	—	dictionary_read Total number of crashed vehicles.	—
median_calculation_timestamp	Calendar date	Understood	time.period.month Month	value_profile The calculated median of the segment over the aggregation period	—
link_length_ft	Number	Nobody has looked	—	—	—