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Surveillance Infrastructure Graph

Data freshness

How current is each source? Freshness is measured relative to predicate volatility, not in absolute days — a two-year-old contract date is fresh; a two-year-old active count is historical (§32.4).

"Not recorded" means the record itself holds no value for that field — for example an ingest run whose completion was never written back, or a source that publishes no observation dates. SIG shows the gap rather than guessing a date (§3.1).

At a glance

Volatility classes: 178 unknown.

Per-source data freshness, sorted by stale entities
SourceLast successful runLast content changeStatusStale entities (for their predicate class)Volatility class
camreg_achd_idok0unknown
camreg_act_auok0unknown
camreg_aiknerok0unknown
camreg_amber_khok0unknown
camreg_apram_ptok0unknown
camreg_arc_1975641302ok0unknown
camreg_arlington_vaok0unknown
camreg_austin_txok0unknown
camreg_avctransportok0unknown
camreg_azdot_azok0unknown
camreg_baltimore_atves_mdok0unknown
camreg_baltimore_mdok0unknown
camreg_bangla_bdok0unknown
camreg_bargabosok0unknown
camreg_batonrouge_laok0unknown
camreg_bedford_gbok0unknown
camreg_bettendorf_iaok0unknown
camreg_bouhan_jpok0unknown
camreg_brea_caok0unknown
camreg_caledon_onok0unknown
camreg_calgary_abok0unknown
camreg_caloes_caok0unknown
camreg_camberwell_auok0unknown
camreg_camilo_schoolsnot recordedok0unknown
camreg_carver_mnok0unknown
camreg_cclemireok0unknown
camreg_chattanooga_tnok0unknown
camreg_cheicyliaok0unknown
camreg_chicago_ilok0unknown
camreg_colgisok0unknown
camreg_cotgeook0unknown
camreg_cphangok0unknown
camreg_cwarcgisok0unknown
camreg_dc_dot_dcok0unknown
camreg_denver_cook0unknown
camreg_donegal_ieok0unknown
camreg_dover_gbok0unknown
camreg_dubuque_iaok0unknown
camreg_duganmeyerok0unknown
camreg_durham_gbok0unknown
camreg_eastdun_gbok0unknown
camreg_ebrgis_laok0unknown
camreg_esri_dashok0unknown
camreg_esriukpolice_gbok0unknown
camreg_essex_gbok0unknown
camreg_fifiaok0unknown
camreg_firemedicok0unknown
camreg_fl511_flok0unknown
camreg_forwardallianceok0unknown
camreg_freese_dmok0unknown
camreg_friendswood_txok0unknown
camreg_gainesville_flok0unknown
camreg_gedling_gbok0unknown
camreg_gistel_beok0unknown
camreg_glasgow_gbok0unknown
camreg_gmh_emc_gaok0unknown
camreg_goldcoast_auok0unknown
camreg_guildford_gbok0unknown
camreg_gvanmarenok0unknown
camreg_helbergok0unknown
camreg_honolulu_hiok0unknown
camreg_indonesia_idok0unknown
camreg_infocemosaok0unknown
camreg_infraestructuraok0unknown
camreg_iraok0unknown
camreg_jcfd3_orok0unknown
camreg_jelenicok0unknown
camreg_jmh_usok0unknown
camreg_kcmo_mook0unknown
camreg_keizer_orok0unknown
camreg_keshanok0unknown
camreg_kirkland_waok0unknown
camreg_kosmanok0unknown
camreg_kunyingok0unknown
camreg_lambeth_gbok0unknown
camreg_langanok0unknown
camreg_lawrence_ksok0unknown
camreg_lenhardtok0unknown
camreg_leon_flok0unknown
camreg_lexington_kyok0unknown
camreg_lisburn_gbok0unknown
camreg_lojic_kyok0unknown
camreg_lpd_flockok0unknown
camreg_manhattan_ksok0unknown
camreg_mark43ok0unknown
camreg_massdot_maok0unknown
camreg_mbrc_auok0unknown
camreg_mctx_txok0unknown
camreg_md_opendataok0unknown
camreg_mhebertok0unknown
camreg_mndot_mnok0unknown
camreg_monmap_mnok0unknown
camreg_mueller_deok0unknown
camreg_nashville_tnok0unknown
camreg_nitrook0unknown
camreg_nola_laok0unknown
camreg_nola_safety_laok0unknown
camreg_northayrshire_gbok0unknown
camreg_nottingham_gbok0unknown
camreg_nurnazihahok0unknown
camreg_nyc_jgrayson_nyok0unknown
camreg_nyc_weltia_nyok0unknown
camreg_nzta_nzok0unknown
camreg_oem_cameraok0unknown
camreg_olssonok0unknown
camreg_oosgis_nlok0unknown
camreg_osm_surveillanceok0unknown
camreg_ottawa_onok0unknown
camreg_palmdesert_caok0unknown
camreg_peel_onok0unknown
camreg_penndot_paok0unknown
camreg_pgcounty_mdok0unknown
camreg_pipeline_secok0unknown
camreg_plymouth_gbok0unknown
camreg_polyu_hkok0unknown
camreg_portland_orok0unknown
camreg_puertogaitan_cook0unknown
camreg_raleigh_ncok0unknown
camreg_ramallah_psok0unknown
camreg_redmond_waok0unknown
camreg_riyadh_saok0unknown
camreg_rjcolemanok0unknown
camreg_rochester_nyok0unknown
camreg_ruslanok0unknown
camreg_salisbury_ncok0unknown
camreg_sarasota_flok0unknown
camreg_schellingerok0unknown
camreg_seattle_waok0unknown
camreg_sensenetok0unknown
camreg_sfossok0unknown
camreg_sheffield_gbok0unknown
camreg_siouxfalls_sdok0unknown
camreg_smart_skyok0unknown
camreg_squanok0unknown
camreg_stalbert_abok0unknown
camreg_stanford_usok0unknown
camreg_surrey_bcok0unknown
camreg_sweeneyok0unknown
camreg_tbloseok0unknown
camreg_thailand_thok0unknown
camreg_toronto_onok0unknown
camreg_townofwsok0unknown
camreg_trafficops_caok0unknown
camreg_trpa_usok0unknown
camreg_tulane_laok0unknown
camreg_txdot_rep_txok0unknown
camreg_uchicagook0unknown
camreg_ucsdok0unknown
camreg_ukm_myok0unknown
camreg_umbc_mdok0unknown
camreg_univmb_mbok0unknown
camreg_uofmd_mdok0unknown
camreg_vancouver_bcok0unknown
camreg_vidyaok0unknown
camreg_washington_dcok0unknown
camreg_webappfmeok0unknown
camreg_wellington_nzok0unknown
camreg_whatleyok0unknown
camreg_wim_cameraok0unknown
camreg_winnipeg_mbok0unknown
camreg_yazidok0unknown
camreg_ylineok0unknown
camreg_york_gbok0unknown
camreg_york_onok0unknown
camreg_yorkuok0unknown
camreg_zyingerok0unknown
dot_511_alok0unknown
dot_511_dcok0unknown
dot_511_gaok0unknown
dot_511_iaok0unknown
dot_511_ilok0unknown
dot_511_kyok0unknown
dot_511_laok0unknown
dot_511_mdok0unknown
dot_511_mook0unknown
dot_511_orok0unknown
dot_511_utok0unknown
dot_511_waok0unknown

How we know this

Artifacts
255
Tier distribution
2245390×untiered, 2690×W1, 175114×W3
Independent sources
218
Date range
2020-01-28 – 2026-09-26
Rules applied
p27.3/1.0.0
Human review
Not yet human-reviewed

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Cite this page

Belief-pinned permalink (reproducible after SIG corrects itself):https://surveillancegraph.org/data-freshness/?as_of_world=2026-09-27&as_of_belief=2026-09-27&ruleset=p27.3%2F1.0.0

As of world , belief ; ruleset p27.3/1.0.0.

Surveillance Infrastructure Graph (SIG), "Data freshness", as of world 2026-09-27, belief 2026-09-27, ruleset p27.3/1.0.0. Retrieved from https://surveillancegraph.org/data-freshness/?as_of_world=2026-09-27&as_of_belief=2026-09-27&ruleset=p27.3%2F1.0.0