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Here we present Cosmic Background Imager (CBI) observations at 26-36 GHz that show no evidence for significant anomalous emission. The spectral index within the CBI band, and between CBI and Effelsberg data at 1.4/2.7 GHz, is consistent with optically thin free-free emission. The best-fitting temperature spectral index from 2.7 to 31 GHz, $\\beta=-2.06 \\pm 0.03$, is close to the theoretical value, $\\beta=-2.12$ for $T_{e}=9100$ K. We place an upper limit of 24% ~"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/0603141","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-06T20:49:56Z","cross_cats_sorted":[],"title_canon_sha256":"817df28cbafd7316c8a00257b463305029f11502266bd3530b4d3734b994d7b2","abstract_canon_sha256":"9da858d0ffa18f676d1faaf50b8c61ff01379abcbb5931b8a1a17cb429fbd9ba"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:58:21.606873Z","signature_b64":"+rCuh1BjrXK/EcIZ3XqkaM6X7o+pZqU5EV+4tr9J+Z/fxa7/WNb2dtZUmfh5wVFyjaPm6TMu70Y9ohubBzOMAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa7e1ff8749093446d615bb87d398dc1d675c61699d65e600742118865d4d0f3","last_reissued_at":"2026-07-04T16:58:21.606522Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:58:21.606522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"An upper limit on anomalous dust emission at 31 GHz in the diffuse cloud [LPH96]201.663+1.643","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. 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