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56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 12, 2026, 1:36 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.
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← What we have understood · Dataset page
Every field decided — Every field carries a verdict — which does not mean every field is understood.
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 |
|---|---|---|---|---|---|
| dropoff_latitude | Number | Understood | geometry.latitude Latitude | dictionary_read_underspecifiedLatitude where the meter was | — |
| tip_amount | Number | Understood | quantity.money Monetary amount | dictionary_readThis field is automatically populated for credit card tips. Cash tips are not included. | — |
| trip_distance | Number | Checked, no match | — | dictionary_readThe elapsed trip distance in miles reported by the taximeter. | — |
| pickup_longitude | Number | Understood | geometry.longitude Longitude | dictionary_read_underspecifiedLongitude where the meter was | — |
| pickup_latitude | Number | Understood | geometry.latitude Latitude | dictionary_read_underspecifiedLatitude where the meter was | — |
| rate_code | Text | Understood | category.classification Publisher classification | dictionary_readThe final rate code in effect at the end of the trip | — |
| dropoff_datetime | Calendar date | Checked, no match | — | value_domain_readtop[8 of 10]={1×102969250; 2×20899227; 5×7938444 | — |
| mta_tax | Number | Understood | quantity.money Monetary amount | dictionary_readthat is automatically triggered based on the metered rate in use. | — |
| passenger_count | Number | Understood | quantity.persons Count of persons | dictionary_readThe number of passengers | — |
| extra | Number | Understood | quantity.money Monetary amount | dictionary_readMiscellaneous extras and surcharges. | — |
| pickup_datetime | Calendar date | Understood | time.world_event.occurred Occurrence time | dictionary_readThe date and time when the meter was engaged. | — |
| payment_type | Text | Understood | category.classification Publisher classification | dictionary_readA numeric code signifying how the passenger paid for the trip | — |
| ratecodeid RateCodeID | Number | Checked, no match | — | value_domain_readtop[7]={1×23231466; 2×428167; 5×119962; 3×39440; 4×18581; 99×1165; 6×150} | — |
| dropoff_longitude | Number | Understood | geometry.longitude Longitude | dictionary_read_underspecifiedLongitude where the meter was | — |
| total_amount | Number | Understood | quantity.money Monetary amount | dictionary_readThe total amount charged to passengers. Does not include cash tips. | — |
| tolls_amount | Number | Understood | quantity.money Monetary amount | dictionary_read_underspecifiedTotal amount of all tolls paid in trip. | — |
| imp_surcharge | Number | Understood | quantity.money Monetary amount | dictionary_readsurcharge assessed trips at the flag drop. The improvement surcharge began being levied in 2015. | — |
| store_and_fwd_flag | Text | Checked, no match | — | value_domain_readtop[2]={N×1367745; Y×84019} | — |
| vendor_id | Text | Checked, no match | — | dictionary_readA designation for the technology vendor that provided the record. | — |
| fare_amount | Number | Understood | quantity.money Monetary amount | dictionary_readThe time-and-distance fare calculated by the meter. | — |