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56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 5:51 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.
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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 |
|---|---|---|---|---|---|
| puma_public_use_microdata PUMA (Public Use Microdata Sample Areas) | Text | Checked, no match | — | dictionary_readA Public Use Microdata Area, or PUMA, are geographic units used by the US Census | — |
| home_broadband_and_mobile Home Broadband and Mobile Broadband Adoption (Percentage of Households) | Number | Checked, no match | — | dictionary_readThe percentage of the households that currently have access to both Broadband and Mobile Broadband level internet speeds | — |
| home_broadband_and_mobile_1 Home Broadband and Mobile Broadband Adoption by Quartiles (High, Medium-High, Medium-Low, Low) | Text | Understood | category.classification Publisher classification | value_domain_readtop[4]={Medium High×16; High×15; Low×14; Medium Low×10} | — |
| borough Borough | Text | Understood | place.borough Borough | value_domain_read | borough |