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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 12, 2026, 3:54 PM

Where the unread columns are

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.

2020 Yellow Taxi Trip Data

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← What we have understood · Dataset page

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
tolls_amount	Number	Not enough to tell	—	value_domain_read	—
congestion_surcharge	Number	Not enough to tell	—	value_domain_read	—
extra	Number	Not enough to tell	—	value_domain_read	—
store_and_fwd_flag	Text	Checked, no match	—	value_domain_read top[2]={N×1367745; Y×84019}	—
total_amount	Number	Not enough to tell	—	value_domain_read	—
passenger_count	Number	Checked, no match	—	value_domain_read smallest=0 largest=192	—
tpep_dropoff_datetime	Calendar date	Not enough to tell	—	value_profile	—
tpep_pickup_datetime	Calendar date	Not enough to tell	—	value_profile	—
improvement_surcharge	Number	Not enough to tell	—	value_domain_read	—
tip_amount	Number	Not enough to tell	—	value_domain_read	—
payment_type	Number	Checked, no match	—	value_domain_read top[5]={1×17463663; 2×6148430; 3×144463; 4×82360; 5×15}	—
trip_distance	Number	Checked, no match	—	value_domain_read top[8 of 20]={0.90×433892; 0.80×432745; 1.00×427469; 1.10×410849; 0.70×409921; 1.20×391444; 1.30×369482; 0.60×362624}	—
pulocationid PULocationID	Number	Checked, no match	—	value_domain_read smallest=1 largest=265	—
mta_tax	Number	Not enough to tell	—	value_domain_read	—
dolocationid DOLocationID	Number	Checked, no match	—	value_domain_read smallest=1 largest=265	—
ratecodeid RatecodeID	Number	Checked, no match	—	value_domain_read top[7]={1×23231466; 2×428167; 5×119962; 3×39440; 4×18581; 99×1165; 6×150}	—
fare_amount	Number	Not enough to tell	—	value_domain_read	—
vendorid VendorID	Number	Checked, no match	—	value_domain_read top[2]={2×15908366; 1×7930565}	—