Data audit
| file | sha256 | rows | cols |
|---|---|---|---|
| data/series.csv | c29dde22e215b14fe04d1786c9e9634c18863c78d1c283636e9cbfb31dabc514 | 400 (+header) | 3 (month str, x float, y float) |
| data/memo.md | 0486b6a6e26671a53d02e9cf0ceee063479ea0a05bd07aadf76aa71e9d2a0568 | text | – |
- month 1990-01 … 2023-04, monotone, 0 gaps, 0 duplicates; 0 missing values.
- x: mean −0.134, sd 1.005, range [−2.69, 2.36]; y: mean 2.079, sd 0.904, range [0.0036, 4.81]; no |z|>4 outliers. Both dimensionless (synthetic).
- Lag-1 autocorrelation: x 0.662, y 0.624 (persistent, as stated in TASK.md).
- No availability-rule violations: memo is used only as a claim to check.
- Exclusions: none needed (see out/exclusions.csv; 400 → 400).