The per-test NIST STS experiments/ trees (stats.txt / results.txt for all 15 tests, both mechanisms, 46 MB) are in the companion download
rain-rng-package-v1.2-sts-experiments-{chacha,hmac}.zip (same layout, one per mechanism). finalAnalysisReport.txt, freq.txt, assess-stdout.txt and RUN.txt are here.
