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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 11, 2026, 4:26 AM

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.

Swim for Life: 2016 to 2020

mtt6-ywt4

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
number_of_sessions_attended Number of Sessions Attended	Number	Checked, no match	—	dictionary_read sessions attended by participant	—
school_year School Year	Text	Understood	time.fiscal_period Fiscal or school period	dictionary_read The school year in which the participant was enrolled in Swim for Life	—
borough Borough	Text	Understood	place.borough Borough	value_domain_read	borough
adaptive_class Adaptive Class	Checkbox	Checked, no match	—	dictionary_read Indicates whether	—
training_entity Training Entity	Text	Checked, no match	—	dictionary_read Employer of staff who conducted the Swim for Life class	—
gender Gender	Text	Understood	category.classification Publisher classification	dictionary_read The gender identity of the Swim for Life participant	—
training_site Training Site	Text	Checked, no match	—	value_domain_read Asser Levy	—
session Session	Text	Checked, no match	—	dictionary_read ession	—
first_day_of_class First Day of Class	Calendar date	Understood	time.period.month Month	value_profile The first day of class in which the participant attended Swim for Life	—
district District	Number	Checked, no match	—	value_domain_read smallest=0 largest=202	—
session_date_range Session Date Range	Text	Checked, no match	—	value_domain_read October - December×7465	—
school School	Text	Checked, no match	—	value_domain_read P.S. 24×448	—
class_number Class Number	Text	Checked, no match	—	dictionary_read Class identification Number	—