A Supporting Dataset for "Multi-scale Process Cyclicity in the Decimal Expansion of π"

It contains two key components:1. The first 100,000 decimal digits of π as a continuous digit string (file: pi_first_100k_digits.txt).2.

A summary table of spectral analysis results identifying three significant periodicities at 2, 19.1, and 244.2-digit periods (file: spectral_peaks_summary.csv).The data demonstrates the existence of multi-scale cyclic structures ("process cyclicity") within π's digit sequence, challenging conventional views of π as a purely random normal number.