# LIB2-205 — SL-02: NuFIT atmospheric splitting with SK-ATM

- class: COMPARATOR · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.80)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

The ledger’s normal-ordering NuFIT atmospheric mass-squared splitting comparator with SK-ATM is 2.511e-3 eV², with asymmetric uncertainties.

## Primary source

Paper 5, §2, Named atmospheric splitting beside the literal mass-reading test, PDF p.84: "∆m23ℓ = 2.511 × 10−3 eV2"

## Machine

- url: /library-v2/LIB2-205/
- content_sha256: 868697d529e06b0bea9288896997bc7fd0849a8f4a00fb2c490611184e127edd
- candidate_ids: C2-180

## Freshness

- BUILD_STAMP S371a · 2026-09-26T22:53Z · master 01d1a5873ede42f5 · cut 9dcc6ce9a8ee3e02
- Declared volatile fields (R36): BUILD_STAMP