Private correlation tools compare your own journal signals with selected environmental metrics over time. They are exploratory statistics, not proof of causation and not a diagnostic or clinical instrument.
Which data are compared
The tool works only with private user entries and selected environmental metrics. Personal fields include sleep quality, energy, mood and concentration on 1-5 ordinal scales plus meditation minutes. Supported environmental metrics include Kp, Schumann Activity Index, solar-wind speed and locally calculated lunar illumination.
Sample size and time lags
A result requires at least 20 matched pairs and 30 is the preferred level. The analysis uses at most 180 journal observations. Tested time lags are -24, -12, 0, 12 and 24 hours, with environment time defined as personal observation time plus the selected lag.
Statistics, privacy and inference boundary
Spearman rho is primary for ordinal 1-5 fields. Pearson r and a 95% Pearson interval using Fisher z are also reported where the sample permits. The system does not provide p-values or automatically select a best lag. Raw matched pairs are not returned, multiple-comparison caution is shown, and the result never infers diagnosis or causation.