# Data audit
| file | sha256 | rows | cols |
|---|---|---|---|
| data/series.csv | c29dde22e215b14fe04d1786c9e9634c18863c78d1c283636e9cbfb31dabc514 | 400 | 3 (month str YYYY-MM, x float, y float) |
| data/memo.md | 0486b6a6e26671a53d02e9cf0ceee063479ea0a05bd07aadf76aa71e9d2a0568 | text | – |

- months 1990-01..2023-04, 399 one-month steps, no gaps, no duplicate months, no missing values.
- x: mean -0.134, sd 1.005, range [-2.69, 2.36]; y: mean 2.079, sd 0.904, range [0.004, 4.81]. Dimensionless; no anomalies.
- No availability-rule violations: memo used only for comparison (its numbers are reproduced by analysis.py: t_iid, p_iid).
- No exclusions applied.