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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, 2:28 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 |
|---|---|---|---|---|---|
| survey_stop_borough | Text | Understood | place.borough Borough | value_domain_readtop[6]={NA×9874; Brooklyn×268; Manhattan×205; Queens×181; Bronx×102; Staten Island×74} | — |
| opinion_on_increased_fares | Text | Checked, no match | — | value_domain_readtop[6]={Not satisfied×3733; Highly unsatisfied×2291; Somewhat satisfied×2135; Neutral×1544; NA×625; Very satisfied×376} | — |
| frequency_of_rerouting | Text | Checked, no match | — | value_domain_readtop[6]={10 - 20 min×4441; 5 - 10 min×4299; 20 - 45 min×1078; NA×773; 45 - 60 min×82; > 60 min×31} | — |
| subway_line_used_most_often | Text | Checked, no match | — | value_domain_readsmallest=1 largest=Z | — |
| zip_code | Text | Checked, no match | — | value_domain_read | — |
| top_three_complaints | Text | Checked, no match | — | value_domain_readsmallest=['Crime / Safety'] largest=['Station infrastructure', ' | — |
| submitted_at | Text | Understood | time.world_event.occurred Occurrence time | dictionary_readTime and date of submission | — |
| survey_stop_location | Text | Checked, no match | — | value_domain_readsmallest=100 Gold Street largest=Zoo Center | — |
| most_common_reason_for_delay | Text | Checked, no match | — | value_domain_readtop[4]={Work×7347; Other×2291; NA×576; School×490} | — |
| is_subway_affordable | Checkbox | Checked, no match | — | value_domain_readtop[2]={False×30748; True×8334} | — |
| use_of_subway_frequency | Text | Checked, no match | — | value_domain_readtop[6]={10 - 20 min×4441; 5 - 10 min×4299; 20 - 45 min×1078; NA×773; 45 - 60 min×82; > 60 min×31} | — |
| primary_use_of_subway | Text | Checked, no match | — | value_domain_readtop[4]={Work×7347; Other×2291; NA×576; School×490} | — |
| average_length_subway_ride | Text | Checked, no match | — | value_domain_readtop[6]={10 - 20 min×4441; 5 - 10 min×4299; 20 - 45 min×1078; NA×773; 45 - 60 min×82; > 60 min×31} | — |
| overall_satisfaction | Text | Checked, no match | — | value_domain_readtop[6]={Not satisfied×3733; Highly unsatisfied×2291; Somewhat satisfied×2135; Neutral×1544; NA×625; Very satisfied×376} | — |
| get_to_subway_via | Text | Checked, no match | — | value_domain_readtop[4]={Work×7347; Other×2291; NA×576; School×490} | — |
| frequency_of_delays | Text | Checked, no match | — | value_domain_readtop[6]={10 - 20 min×4441; 5 - 10 min×4299; 20 - 45 min×1078; NA×773; 45 - 60 min×82; > 60 min×31} | — |
| approximate_delay_duration | Text | Checked, no match | — | value_domain_readtop[6]={10 - 20 min×4441; 5 - 10 min×4299; 20 - 45 min×1078; NA×773; 45 - 60 min×82; > 60 min×31} | — |
| collection_method | Text | Understood | category.classification Publisher classification | value_domain_readtop[4]={MOBILE×62677; ONLINE×30624; PHONE×6362; UNKNOWN×3} | — |
| alternative_transport | Text | Checked, no match | — | value_domain_readtop[4]={Work×7347; Other×2291; NA×576; School×490} | — |