It belongs to Environment and Living Conditions, the part of the welfare catalog concerned with environmental exposures, resource stewardship, waste, climate pressure, and liveable surroundings. The exact stored unit is PERCENT, the geographic presentation is global, the data publisher is United Nations Statistics Division, and the immutable numerical identity is UN-SDG-11.7.1#ENACSURB_OPENSP#Reporting Type=G#identity. The preliminary catalog candidate 109 is reconciled to the exact official series “Urban population with convenient access to open public spaces” in PERCENT. This is a deliberate canonical correction: the database title names what the values actually measure, while the input wording remains in the reconciliation and audit trail. No hidden proxy label, fallback series, or silently substituted denominator remains. For catalog item 109, the provider definition is: Average share of urban population with convenient access to open public spaces (%). The stored rows are an explicitly disclosed unweighted mean of reporting country or city observations for SDG indicator 11.7.1, series ENACSURB_OPENSP, constrained to Reporting Type=G. That definition controls the denominator, population, reporting instrument, and statistical meaning. This Indicator records an observed outcome; it does not assert why that outcome changed. Welfare assessment for item 109 uses higherisbetter. Higher observations are treated as better welfare relative to the dated comparative reference. The direction applies to the stored official measure after the disclosed transformation, if any, rather than being inferred from an emotionally positive or negative title. No mathematical transformation is applied before persistence. Keeping title, series identity, unit, scope, transformation, and interpretation together prevents the record from mixing incompatible measurement concepts. The numerical observations for catalog item 109 were retrieved from United Nations Global SDG Indicators Database through https://unstats.un.org/SDGAPI/v1/sdg/Indicator/Data?indicator=11.7.1&pageSize=10000 (opens in a new tab). The provider landing page is https://unstats.un.org/sdgs/dataportal/database?indicator=11.7.1 (opens in a new tab). The research package records the access date, exact dataset and series identifiers, dimension key Reporting Type=G, unit, provider metadata, transformation, and yearly aggregation label. The bounded Source and Evidence records can therefore reproduce which numbers were used without treating a generic homepage as row-level proof. Measurement provenance for item 109 follows this provider method: The United Nations database supplies country or city observations for the exact series and dimensions. Factrail stores a disclosed unweighted annual mean and never labels it as a UN-published World total. 2018 combines 19 reporting economies; 2019 combines 15 reporting economies; 2020 combines 1513 reporting economies; 2021 combines 43 reporting economies; 2022 combines 66 reporting economies; 2023 combines 24 reporting economies; 2024 combines 42 reporting economies; 2025 combines 210 reporting economies. The output keeps full numerical precision through NormalLine, deviation, and interpretation calculations. Display clients may round for readability, but the persisted value is not squeezed into a zero-to-one score and is not rounded before calculation. The item 109 NormalLine starts on 2018-01-01 at 68.2 PERCENT. 75th percentile of retained official World observations across the disclosed publication window. The calculation keeps the source unit, dimensions, and transformation fixed and is a comparative reference rather than an invented statutory target. For zeroisnorm, the value is exactly zero and is never relaxed because non-zero observations are common. For every item 109 point, normallinevalue copies that dated line and deviationfromnormal is stored in raw-unit terms as observation minus NormalLine. Arithmetic sign and welfare sign are separate. A positive raw deviation is adverse for lowerisbetter, favourable for higherisbetter, and adverse above zero for zeroisnorm. The custom governance score retains its provider scale and uses the public methodology explanation rather than title sentiment. The complete retained sequence is 2018: 68.9473684211 PERCENT; 2019: 83.92 PERCENT; 2020: 47.6798413748 PERCENT; 2021: 36.8023255814 PERCENT; 2022: 55.65468 PERCENT; 2023: 36.8208333333 PERCENT; 2024: 46.1761904762 PERCENT; 2025: 43.6328571429 PERCENT. The first observation is 68.9473684211 PERCENT in 2018 and the latest is 43.6328571429 PERCENT in 2025. The absolute change is -25.3145112782 PERCENT, equivalent to -36.7157033806% of the absolute starting level. The minimum observed value is 36.8023255814 PERCENT, and the maximum is 83.92 PERCENT. For catalog item 109, the latest observation differs from the NormalLine by -24.5671428571 PERCENT and is classified as negative under higherisbetter. That classification is a deterministic comparison, not a causal explanation or editorial verdict. A movement may reflect real change, altered reporting coverage, revised estimates, a changed survey frame, or several of those at once. There are 8 retained item 109 observations in the selected 2018-2025 research window. The retained observations satisfy the minimum temporal rule without interpolation, extrapolation, or forward filling. Missing years are absent observations, not zeroes. The sequence is intentionally irregular when the official source is irregular, because a smooth-looking line created by invented values would be methodologically false. The displayed global item 109 sequence has one consistent numerical identity: UN-SDG-11.7.1#ENACSURB_OPENSP#Reporting Type=G#identity. No second source series is spliced into a gap, no latest value is copied into a missing year, and no country-only observation is relabelled as a World value. If the source later adds or revises an observation, the update must arrive as a new reviewed research package with its own checksum and audit record. A defensible graph edge requires an existing Driver, direction, strength, lag, confidence, and Source/Evidence that supports the mechanism. The outcome series alone cannot establish that causal chain. For item 109, importance weight 0.8500000000000001 is generated by indicator-importance-rubric-v1. Its five committed components are directness 0.9, population reach 0.8, persistence 0.75, effect on human capabilities 0.85, and overlap control 0.9. The formula weights them 0.35, 0.25, 0.20, 0.15, and 0.05, then rounds to the nearest 0.05. The value is deterministic and reproducible; it is not an intuitive score assigned while drafting prose. The 2018-2025 sequence for item 109 is too short for strong causal or structural claims. Cross-economy comparability can be affected by institutional definitions, survey coverage, modelled estimates, missing observations, classification practices, revisions, and unequal statistical capacity. A global aggregate or unweighted reporting-economy mean can also conceal distributional extremes and should not be used as an individual-level estimate. The item 109 NormalLine is a transparent comparative reference, not a claim that every jurisdiction has the same legal target or feasible frontier. The source may revise both historical points and metadata. Any later refresh must preserve the earlier Source, Evidence, checksum, and audit trail; it must not mutate the meaning of an already reviewed series identity.