Fold an invented atmosphere
A 12-hour sine signal is combined with deterministic weather-like variations. This is not station data.
Blue: mean; thin gray: first day. Horizontal axis: clock hours 0–23. Vertical axis: invented pressure anomaly in arbitrary units.
The extra variation is mathematical and need not cancel perfectly. Averaging does not identify a physical tide or remove real sensor/timekeeping biases. The table is the plot’s text equivalent.