{"as_of":"2026-08-16T10:22:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:ed9cdee9500e1aa7eed8b82fedf8323677edc4e34dcb3caca4b3357ac2c4ab41","coverage":[{"denominator":8,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":8,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T15:05:20.698878Z","state":"measured"},{"denominator":8,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":8,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-16T06:30:59.297886+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/1908.01836/citation-record","integrity":"/paper/1908.01836/integrity","json":"/paper/1908.01836/citation-record.json","paper":"/paper/1908.01836"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.851913Z","title":null,"venue":null,"work_id":"7e4a61ae-12d6-4d45-9bd0-1fd33b542df8","year":2015},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.660559Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:098453895a7471e2fd654eaa879d2488edefa8a32a6d3cdfebca7ed77948a458","observation_id":"d728db8f-cd84-41d9-b39f-8181d5e790b4","resolution":{"observed_at":"2026-08-14T15:05:20.856473Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.822867Z","title":null,"venue":null,"work_id":"829f9314-97b2-4eff-81bd-bdd5d312bb02","year":1998},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.670330Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:7e5db7b850947500a3dc8ec5dd8b1723d3bb2ac608724c1c78ee3e3759b39684","observation_id":"b5a8aaa1-941f-4023-a9e6-4a5ffe27caf8","resolution":{"observed_at":"2026-08-14T15:05:20.826744Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.807228Z","title":null,"venue":null,"work_id":"f02507c9-f996-4948-8d0f-9f9e6668de6a","year":2001},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.676104Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:0e4a0d84aa34818c7829cd20f1886751f2f07addaaeca94f17b3ddce3689c602","observation_id":"f811bee6-0426-4b3b-af83-5c84102857fb","resolution":{"observed_at":"2026-08-14T15:05:20.811709Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.793270Z","title":"In winter season foF2 values higher than summer season for high and low SSN this is anomaly in mid-latitude region","venue":null,"work_id":"a24866d3-c8f6-4fcb-a96f-5304a6292dc6","year":2001},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.681351Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:693f30b1990601beba9b710cf07f76f9b79deb7e154d968e470ed981583110bf","observation_id":"bf33af20-d40b-40ef-89a5-552c5c52dcfe","resolution":{"observed_at":"2026-08-14T15:05:20.797915Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.776896Z","title":"Ionospheric data from the ionosonde stations such as Wakkanai station can be used to monitor this environment by observing Mid- latitude propagation conditions","venue":null,"work_id":"a470be54-93aa-404c-a7f3-07ccb1241117","year":2001},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.688184Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:786788f2c2c56c90bfc56f330f1bc635f79d3529ef17e984d550940dda0b5c02","observation_id":"71d8cb13-3fdc-4cab-bb07-775f8ba6de38","resolution":{"observed_at":"2026-08-14T15:05:20.781759Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.762320Z","title":null,"venue":null,"work_id":"2e075ec9-950d-406d-ba33-8303210cfbd2","year":null},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.693872Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:7e4a83c9bc53927458c6a3ebd43e6d8a681af6393ccba8aa3c570099653c3a31","observation_id":"6a6c0739-79df-4b9b-9623-ba1053075dd7","resolution":{"observed_at":"2026-08-14T15:05:20.767610Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.740982Z","title":null,"venue":null,"work_id":"85e636bf-aa54-4d24-9111-bab69a508f8f","year":2003},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.698878Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:47287a99bb506f1bef0a79dac6a908a0ffafb3f176271f4e2739f69a153fccaf","observation_id":"9e5642e1-8499-4e8a-847c-4bbd847860a2","resolution":{"observed_at":"2026-08-14T15:05:20.747648Z","resolver_source":"raw_fallback","status":"malformed_identifier"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T15:05:20.837033Z","title":null,"venue":null,"work_id":"2ddb92e8-3d30-4f12-89a4-97293a8cd21d","year":2015},"citing_paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency","version":1},"reference_index":2013,"source":"pdf_text","source_observed_at":"2026-08-14T15:05:20.665980Z"},"links":{"citing_paper":"/paper/1908.01836"},"observation_digest":"sha256:7aedaf107a5fa7078b6ba876b0e49f12e0dda8f3939f8b829470ddf36cc6129e","observation_id":"147340ae-1d78-48df-80ad-33b3ee184987","resolution":{"observed_at":"2026-08-14T15:05:20.843058Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"1908.01836","last_updated":"2019-08-05T20:18:09Z","latest_version":1,"primary_category":"physics.space-ph","snapshot_observed_at":"2026-08-16T02:22:09.394539Z","submitted_at":"2019-08-05T20:18:09Z","title":"Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency"},"reference_resolution":{"displayed":8,"state_counts":{"malformed_identifier":1,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":5,"verified_exact":0,"verified_fuzzy":2},"total_outbound_references":8},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-16T06:30:59.297886+00:00","source":"crossref"},{"observed_at":"2026-08-16T06:30:54.164669+00:00","source":"retraction_watch"}],"thesis":"As of 16 August 2026, this Paper Citation Record lists 8 of 8 outbound references and 0 inbound Pith citation observations for arXiv:1908.01836."}