E-PROFILE · Calibration monitoring Flag reference ← summary ↑ prev station ↓ next station

0-20000-0-03005_A CHM15k Rayleigh

LERWICK · UK · Met Office UK Engineering Services

WMO 0-20000-0-03005 Lat/Lon 60.139, -1.185 Alt 82 m

Rayleigh 7% success · 29/395 · median 1.574e+11 · rel. unc 7%

Diagnostic — latest ← → valid calibrations, Ctrl+← → all days, ↑ ↓ change station, 0 flag + note (1 aerosol · 2 cloud · 3 low signal) ( good calibration · rejected)

calibration diagnostic

All Rayleigh calibrations (395) — click a date to load its diagnostic, click a flag for its meaning

DateFlagC_LUncertaintyExtraMessage
20260617 0.0 No data No profiles in nighttime window
20260616 0.0 No data No profiles in nighttime window
20260615 0.0 No data No profiles in nighttime window
20260614 0.0 No data No profiles in nighttime window
20260613 0.0 No data No profiles in nighttime window
20260612 0.0 No data No profiles in nighttime window
20260611 0.0 No data No profiles in nighttime window
20260518 -1.0 Not a clear night Not a clear night
20260517 -1.0 Not a clear night Not a clear night
20260516 -1.0 Not a clear night Not a clear night
20260515 -1.0 Not a clear night Not a clear night
20260514 -1.0 Not a clear night Not a clear night
20260513 -1.0 Not a clear night Not a clear night
20260512 -1.0 Not a clear night Not a clear night
20260511 -1.0 Not a clear night Not a clear night
20260510 -1.0 Not a clear night Not a clear night
20260509 -1.0 Not a clear night Not a clear night
20260508 -1.0 Not a clear night Not a clear night
20260507 -1.0 Not a clear night Not a clear night
20260506 -1.0 Not a clear night Not a clear night
20260505 -1.0 Not a clear night Not a clear night
20260504 -1.0 Not a clear night Not a clear night
20260503 -1.0 Not a clear night Not a clear night
20260502 -1.0 Not a clear night Not a clear night
20260501 -1.0 Not a clear night Not a clear night
20260430 -1.0 Not a clear night Not a clear night
20260429 0.5 Partial success 1.393e+11 4.76e+09 2060–4937 m Successful (method err: 10.5%, sensitivity 2σ: 3.4%)
20260428 -1.0 Not a clear night Not a clear night
20260427 -1.0 Not a clear night Not a clear night
20260426 0.5 Partial success 1.285e+11 1.15e+10 2300–4218 m Successful (method err: 11.5%, sensitivity 2σ: 8.9%)
20260425 -1.0 Not a clear night Not a clear night
20260424 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20260423 1.0 Successful 1.419e+11 5.19e+09 2060–5417 m Successful (method err: 4.6%, sensitivity 2σ: 3.7%)
20260422 -1.0 Not a clear night Not a clear night
20260421 1.0 Successful 1.333e+11 5.15e+09 1820–3259 m Successful (method err: 5.9%, sensitivity 2σ: 3.9%)
20260420 -1.0 Not a clear night Not a clear night
20260419 -1.0 Not a clear night Not a clear night
20260418 -1.0 Not a clear night Not a clear night
20260417 -1.0 Not a clear night Not a clear night
20260416 -1.0 Not a clear night Not a clear night
20260415 -1.0 Not a clear night Not a clear night
20260414 1.0 Successful 1.333e+11 1.82e+10 2540–4937 m Successful (method err: 2.6%, sensitivity 2σ: 13.6%)
20260413 -1.0 Not a clear night Not a clear night
20260412 -1.0 Not a clear night Not a clear night
20260411 -1.0 Not a clear night Not a clear night
20260410 -1.0 Not a clear night Not a clear night
20260408 -1.0 Not a clear night Not a clear night
20260407 -1.0 Not a clear night Not a clear night
20260406 -1.0 Not a clear night Not a clear night
20260405 -1.0 Not a clear night Not a clear night
20260404 -1.0 Not a clear night Not a clear night
20260403 -1.0 Not a clear night Not a clear night
20260402 -1.0 Not a clear night Not a clear night
20260401 -1.0 Not a clear night Not a clear night
20260331 -1.0 Not a clear night Not a clear night
20260330 -1.0 Not a clear night Not a clear night
20260329 -1.0 Not a clear night Not a clear night
20260328 -1.0 Not a clear night Not a clear night
20260327 -1.0 Not a clear night Not a clear night
20260326 -1.0 Not a clear night Not a clear night
20260325 -1.0 Not a clear night Not a clear night
20260324 -1.0 Not a clear night Not a clear night
20260323 -1.0 Not a clear night Not a clear night
20260322 -1.0 Not a clear night Not a clear night
20260321 -1.0 Not a clear night Not a clear night
20260320 0.5 Partial success 1.314e+11 6.30e+09 1820–5177 m Successful (method err: 3.0%, sensitivity 2σ: 4.8%)
20260319 1.0 Successful 1.474e+11 3.37e+10 1820–4697 m Successful (method err: 4.3%, sensitivity 2σ: 22.9%)
20260318 -1.0 Not a clear night Not a clear night
20260317 -1.0 Not a clear night Not a clear night
20260316 -1.0 Not a clear night Not a clear night
20260315 -1.0 Not a clear night Not a clear night
20260314 -1.0 Not a clear night Not a clear night
20260313 -1.0 Not a clear night Not a clear night
20260312 -1.0 Not a clear night Not a clear night
20260311 -1.0 Not a clear night Not a clear night
20260310 -1.0 Not a clear night Not a clear night
20260309 -1.0 Not a clear night Not a clear night
20260308 -1.0 Not a clear night Not a clear night
20260307 0.5 Partial success 1.314e+11 7.75e+09 1820–5177 m Successful (method err: 6.0%, sensitivity 2σ: 5.9%)
20260306 -1.0 Not a clear night Not a clear night
20260305 -1.0 Not a clear night Not a clear night
20260304 -1.0 Not a clear night Not a clear night
20260303 -1.0 Not a clear night Not a clear night
20260302 -1.0 Not a clear night Not a clear night
20260301 1.0 Successful 1.205e+11 8.37e+09 1820–5656 m Successful (method err: 10.2%, sensitivity 2σ: 6.9%)
20260228 -1.0 Not a clear night Not a clear night
20260227 -1.0 Not a clear night Not a clear night
20260226 -1.0 Not a clear night Not a clear night
20260225 -1.0 Not a clear night Not a clear night
20260224 -1.0 Not a clear night Not a clear night
20260223 -1.0 Not a clear night Not a clear night
20260222 -1.0 Not a clear night Not a clear night
20260221 0.5 Partial success 1.202e+11 5.69e+09 1820–3259 m Successful (method err: 2.0%, sensitivity 2σ: 4.7%)
20260220 -1.0 Not a clear night Not a clear night
20260219 -1.0 Not a clear night Not a clear night
20260218 -1.0 Not a clear night Not a clear night
20260217 -1.0 Not a clear night Not a clear night
20260216 -1.0 Not a clear night Not a clear night
20260215 -1.0 Not a clear night Not a clear night
20260214 -1.0 Not a clear night Not a clear night
20260213 1.0 Successful 1.257e+11 8.39e+09 2300–4697 m Successful (method err: 3.7%, sensitivity 2σ: 6.7%)
20260212 -1.0 Not a clear night Not a clear night
20260211 -1.0 Not a clear night Not a clear night
20260210 -1.0 Not a clear night Not a clear night
20260209 -1.0 Not a clear night Not a clear night
20260208 -1.0 Not a clear night Not a clear night
20260207 -1.0 Not a clear night Not a clear night
20260206 -1.0 Not a clear night Not a clear night
20260205 -1.0 Not a clear night Not a clear night
20260204 -1.0 Not a clear night Not a clear night
20260203 -1.0 Not a clear night Not a clear night
20260202 -1.0 Not a clear night Not a clear night
20260201 -1.0 Not a clear night Not a clear night
20260131 -1.0 Not a clear night Not a clear night
20260130 -1.0 Not a clear night Not a clear night
20260129 -1.0 Not a clear night Not a clear night
20260128 -1.0 Not a clear night Not a clear night
20260127 -1.0 Not a clear night Not a clear night
20260126 -1.0 Not a clear night Not a clear night
20260125 -1.0 Not a clear night Not a clear night
20260124 -1.0 Not a clear night Not a clear night
20260123 -1.0 Not a clear night Not a clear night
20260122 -1.0 Not a clear night Not a clear night
20260121 -1.0 Not a clear night Not a clear night
20260120 -1.0 Not a clear night Not a clear night
20260119 -1.0 Not a clear night Not a clear night
20260118 -1.0 Not a clear night Not a clear night
20260117 -1.0 Not a clear night Not a clear night
20260116 -1.0 Not a clear night Not a clear night
20260115 -1.0 Not a clear night Not a clear night
20260114 -1.0 Not a clear night Not a clear night
20260113 -1.0 Not a clear night Not a clear night
20260112 -1.0 Not a clear night Not a clear night
20260111 -1.0 Not a clear night Not a clear night
20260110 -1.0 Not a clear night Not a clear night
20260109 -1.0 Not a clear night Not a clear night
20260108 -1.0 Not a clear night Not a clear night
20260107 -1.0 Not a clear night Not a clear night
20260106 -1.0 Not a clear night Not a clear night
20260105 -1.0 Not a clear night Not a clear night
20260104 -1.0 Not a clear night Not a clear night
20260103 -1.0 Not a clear night Not a clear night
20260102 -1.0 Not a clear night Not a clear night
20260101 -1.0 Not a clear night Not a clear night
20251231 -1.0 Not a clear night Not a clear night
20251230 -1.0 Not a clear night Not a clear night
20251229 -1.0 Not a clear night Not a clear night
20251228 0.5 Partial success 1.318e+11 1.88e+10 1820–4218 m Successful (method err: 12.8%, sensitivity 2σ: 14.2%)
20251227 -1.0 Not a clear night Not a clear night
20251226 -1.0 Not a clear night Not a clear night
20251225 -1.0 Not a clear night Not a clear night
20251224 -1.0 Not a clear night Not a clear night
20251223 -1.0 Not a clear night Not a clear night
20251222 -1.0 Not a clear night Not a clear night
20251221 -1.0 Not a clear night Not a clear night
20251220 -1.0 Not a clear night Not a clear night
20251219 -1.0 Not a clear night Not a clear night
20251218 0.5 Partial success 1.643e+11 2.31e+10 3019–3978 m Successful (method err: 7.7%, sensitivity 2σ: 14.1%)
20251217 -1.0 Not a clear night Not a clear night
20251216 0.5 Partial success 1.650e+11 1.81e+10 2540–6376 m Successful (method err: 2.3%, sensitivity 2σ: 11.0%)
20251215 -1.0 Not a clear night Not a clear night
20251214 -1.0 Not a clear night Not a clear night
20251213 -3.0 Method disagreement Method disagreement: 15.2%
20251212 -1.0 Not a clear night Not a clear night
20251211 -1.0 Not a clear night Not a clear night
20251210 -1.0 Not a clear night Not a clear night
20251209 -1.0 Not a clear night Not a clear night
20251208 -1.0 Not a clear night Not a clear night
20251207 -1.0 Not a clear night Not a clear night
20251206 -1.0 Not a clear night Not a clear night
20251205 -1.0 Not a clear night Not a clear night
20251204 -1.0 Not a clear night Not a clear night
20251203 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20251202 -1.0 Not a clear night Not a clear night
20251201 -1.0 Not a clear night Not a clear night
20251130 -1.0 Not a clear night Not a clear night
20251129 -1.0 Not a clear night Not a clear night
20251128 -1.0 Not a clear night Not a clear night
20251127 -1.0 Not a clear night Not a clear night
20251126 -1.0 Not a clear night Not a clear night
20251125 -1.0 Not a clear night Not a clear night
20251124 -1.0 Not a clear night Not a clear night
20251123 -1.0 Not a clear night Not a clear night
20251122 -1.0 Not a clear night Not a clear night
20251121 0.5 Partial success 1.469e+11 9.52e+09 2300–5177 m Successful (method err: 10.9%, sensitivity 2σ: 6.5%)
20251120 -1.0 Not a clear night Not a clear night
20251119 -1.0 Not a clear night Not a clear night
20251118 -1.0 Not a clear night Not a clear night
20251117 -1.0 Not a clear night Not a clear night
20251116 -1.0 Not a clear night Not a clear night
20251115 -1.0 Not a clear night Not a clear night
20251114 -1.0 Not a clear night Not a clear night
20251113 -1.0 Not a clear night Not a clear night
20251112 -1.0 Not a clear night Not a clear night
20251111 -1.0 Not a clear night Not a clear night
20251110 -1.0 Not a clear night Not a clear night
20251109 -1.0 Not a clear night Not a clear night
20251108 -1.0 Not a clear night Not a clear night
20251107 -1.0 Not a clear night Not a clear night
20251106 -1.0 Not a clear night Not a clear night
20251105 0.5 Partial success 1.686e+11 2.10e+10 1820–5656 m Successful (method err: 0.9%, sensitivity 2σ: 12.4%)
20251104 -1.0 Not a clear night Not a clear night
20251103 -1.0 Not a clear night Not a clear night
20251102 -1.0 Not a clear night Not a clear night
20251101 -1.0 Not a clear night Not a clear night
20251031 -1.0 Not a clear night Not a clear night
20251030 -1.0 Not a clear night Not a clear night
20251029 -1.0 Not a clear night Not a clear night
20251028 0.5 Partial success 1.574e+11 9.03e+09 2060–4937 m Successful (method err: 2.8%, sensitivity 2σ: 5.7%)
20251027 -1.0 Not a clear night Not a clear night
20251026 -1.0 Not a clear night Not a clear night
20251025 -1.0 Not a clear night Not a clear night
20251024 -1.0 Not a clear night Not a clear night
20251023 -1.0 Not a clear night Not a clear night
20251022 -1.0 Not a clear night Not a clear night
20251021 -1.0 Not a clear night Not a clear night
20251020 -1.0 Not a clear night Not a clear night
20251019 -1.0 Not a clear night Not a clear night
20251018 -1.0 Not a clear night Not a clear night
20251017 0.5 Partial success 1.556e+11 1.03e+10 2060–5417 m Successful (method err: 0.2%, sensitivity 2σ: 6.6%)
20251016 -1.0 Not a clear night Not a clear night
20251015 -1.0 Not a clear night Not a clear night
20251014 -1.0 Not a clear night Not a clear night
20251013 -1.0 Not a clear night Not a clear night
20251012 -1.0 Not a clear night Not a clear night
20251011 -1.0 Not a clear night Not a clear night
20251010 -1.0 Not a clear night Not a clear night
20251009 -1.0 Not a clear night Not a clear night
20251008 -1.0 Not a clear night Not a clear night
20251007 -1.0 Not a clear night Not a clear night
20251006 -1.0 Not a clear night Not a clear night
20251005 -1.0 Not a clear night Not a clear night
20251004 -1.0 Not a clear night Not a clear night
20251003 -1.0 Not a clear night Not a clear night
20251002 -1.0 Not a clear night Not a clear night
20251001 -1.0 Not a clear night Not a clear night
20250930 -1.0 Not a clear night Not a clear night
20250929 1.0 Successful 1.741e+11 1.06e+10 2300–6136 m Successful (method err: 1.2%, sensitivity 2σ: 6.1%)
20250928 -1.0 Not a clear night Not a clear night
20250927 -1.0 Not a clear night Not a clear night
20250926 0.5 Partial success 1.948e+11 1.81e+10 1820–2779 m Successful (method err: 0.7%, sensitivity 2σ: 9.3%)
20250925 -1.0 Not a clear night Not a clear night
20250924 0.5 Partial success 1.771e+11 8.03e+09 1820–5656 m Successful (method err: 6.5%, sensitivity 2σ: 4.5%)
20250923 -1.0 Not a clear night Not a clear night
20250922 -1.0 Not a clear night Not a clear night
20250921 -1.0 Not a clear night Not a clear night
20250920 -1.0 Not a clear night Not a clear night
20250919 -1.0 Not a clear night Not a clear night
20250918 -1.0 Not a clear night Not a clear night
20250917 -3.0 Method disagreement Method disagreement: 16.3%
20250916 -1.0 Not a clear night Not a clear night
20250915 -1.0 Not a clear night Not a clear night
20250914 1.0 Successful 1.761e+11 1.25e+10 1820–5177 m Successful (method err: 5.7%, sensitivity 2σ: 7.1%)
20250913 0.5 Partial success 1.981e+11 1.52e+10 2300–6136 m Successful (method err: 7.3%, sensitivity 2σ: 7.7%)
20250912 0.5 Partial success 1.881e+11 1.90e+10 1820–5656 m Successful (method err: 7.0%, sensitivity 2σ: 10.1%)
20250911 -1.0 Not a clear night Not a clear night
20250910 -1.0 Not a clear night Not a clear night
20250909 -1.0 Not a clear night Not a clear night
20250908 -1.0 Not a clear night Not a clear night
20250907 -1.0 Not a clear night Not a clear night
20250906 -1.0 Not a clear night Not a clear night
20250905 -1.0 Not a clear night Not a clear night
20250904 -1.0 Not a clear night Not a clear night
20250903 -1.0 Not a clear night Not a clear night
20250901 -1.0 Not a clear night Not a clear night
20250831 -1.0 Not a clear night Not a clear night
20250830 -1.0 Not a clear night Not a clear night
20250829 -1.0 Not a clear night Not a clear night
20250828 -1.0 Not a clear night Not a clear night
20250827 -1.0 Not a clear night Not a clear night
20250826 -1.0 Not a clear night Not a clear night
20250825 -1.0 Not a clear night Not a clear night
20250824 1.0 Successful 1.837e+11 5.81e+09 2060–5417 m Successful (method err: 0.7%, sensitivity 2σ: 3.2%)
20250823 -1.0 Not a clear night Not a clear night
20250822 -1.0 Not a clear night Not a clear night
20250821 -1.0 Not a clear night Not a clear night
20250820 -1.0 Not a clear night Not a clear night
20250819 -1.0 Not a clear night Not a clear night
20250818 -1.0 Not a clear night Not a clear night
20250817 -1.0 Not a clear night Not a clear night
20250816 -1.0 Not a clear night Not a clear night
20250815 -1.0 Not a clear night Not a clear night
20250814 -1.0 Not a clear night Not a clear night
20250813 -1.0 Not a clear night Not a clear night
20250812 -1.0 Not a clear night Not a clear night
20250811 -1.0 Not a clear night Not a clear night
20250810 -1.0 Not a clear night Not a clear night
20250809 -1.0 Not a clear night Not a clear night
20250808 -1.0 Not a clear night Not a clear night
20250807 -1.0 Not a clear night Not a clear night
20250806 -1.0 Not a clear night Not a clear night
20250805 -1.0 Not a clear night Not a clear night
20250804 -1.0 Not a clear night Not a clear night
20250803 -1.0 Not a clear night Not a clear night
20250802 -1.0 Not a clear night Not a clear night
20250801 -1.0 Not a clear night Not a clear night
20250731 -1.0 Not a clear night Not a clear night
20250730 1.0 Successful 2.125e+11 6.07e+09 1820–3738 m Successful (method err: 4.8%, sensitivity 2σ: 2.9%)
20250729 -1.0 Not a clear night Not a clear night
20250728 -1.0 Not a clear night Not a clear night
20250727 -1.0 Not a clear night Not a clear night
20250726 -1.0 Not a clear night Not a clear night
20250725 -1.0 Not a clear night Not a clear night
20250724 0.0 No data No profiles in nighttime window
20250723 0.0 No data No profiles in nighttime window
20250722 0.0 No data No profiles in nighttime window
20250721 0.0 No data No profiles in nighttime window
20250720 0.0 No data No profiles in nighttime window
20250719 0.0 No data No profiles in nighttime window
20250718 0.0 No data No profiles in nighttime window
20250717 0.0 No data No profiles in nighttime window
20250716 0.0 No data No profiles in nighttime window
20250715 0.0 No data No profiles in nighttime window
20250714 0.0 No data No profiles in nighttime window
20250713 0.0 No data No profiles in nighttime window
20250712 0.0 No data No profiles in nighttime window
20250711 0.0 No data No profiles in nighttime window
20250710 0.0 No data No profiles in nighttime window
20250709 0.0 No data No profiles in nighttime window
20250708 0.0 No data No profiles in nighttime window
20250707 0.0 No data No profiles in nighttime window
20250706 0.0 No data No profiles in nighttime window
20250705 0.0 No data No profiles in nighttime window
20250704 0.0 No data No profiles in nighttime window
20250703 0.0 No data No profiles in nighttime window
20250702 0.0 No data No profiles in nighttime window
20250701 0.0 No data No profiles in nighttime window
20250630 0.0 No data No profiles in nighttime window
20250629 0.0 No data No profiles in nighttime window
20250628 0.0 No data No profiles in nighttime window
20250627 0.0 No data No profiles in nighttime window
20250626 0.0 No data No profiles in nighttime window
20250625 0.0 No data No profiles in nighttime window
20250624 0.0 No data No profiles in nighttime window
20250623 0.0 No data No profiles in nighttime window
20250622 0.0 No data No profiles in nighttime window
20250621 0.0 No data No profiles in nighttime window
20250620 0.0 No data No profiles in nighttime window
20250619 0.0 No data No profiles in nighttime window
20250618 0.0 No data No profiles in nighttime window
20250617 0.0 No data No profiles in nighttime window
20250616 0.0 No data No profiles in nighttime window
20250615 0.0 No data No profiles in nighttime window
20250614 0.0 No data No profiles in nighttime window
20250613 0.0 No data No profiles in nighttime window
20250612 0.0 No data No profiles in nighttime window
20250611 0.0 No data No profiles in nighttime window
20250610 0.0 No data No profiles in nighttime window
20250609 0.0 No data No profiles in nighttime window
20250608 0.0 No data No profiles in nighttime window
20250607 0.0 No data No profiles in nighttime window
20250606 0.0 No data No profiles in nighttime window
20250605 0.0 No data No profiles in nighttime window
20250604 0.0 No data No profiles in nighttime window
20250603 0.0 No data No profiles in nighttime window
20250602 0.0 No data No profiles in nighttime window
20250601 0.0 No data No profiles in nighttime window
20250531 0.0 No data No profiles in nighttime window
20250530 0.0 No data No profiles in nighttime window
20250529 0.0 No data No profiles in nighttime window
20250528 0.0 No data No profiles in nighttime window
20250527 0.0 No data No profiles in nighttime window
20250526 0.0 No data No profiles in nighttime window
20250525 0.0 No data No profiles in nighttime window
20250524 0.0 No data No profiles in nighttime window
20250523 0.0 No data No profiles in nighttime window
20250522 0.0 No data No profiles in nighttime window
20250521 0.0 No data No profiles in nighttime window
20250520 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250519 -1.0 Not a clear night Not a clear night
20250518 -1.0 Not a clear night Not a clear night
20250517 1.0 Successful 1.961e+11 7.62e+09 2300–3738 m Successful (method err: 1.6%, sensitivity 2σ: 3.9%)
20250516 -1.0 Not a clear night Not a clear night
20250515 -1.0 Not a clear night Not a clear night
20250514 1.0 Successful 1.640e+11 1.12e+10 2300–3738 m Successful (method err: 11.0%, sensitivity 2σ: 6.9%)
20250513 -1.0 Not a clear night Not a clear night
20250512 -1.0 Not a clear night Not a clear night
20250511 -1.0 Not a clear night Not a clear night
20250510 -1.0 Not a clear night Not a clear night
20250509 -1.0 Not a clear night Not a clear night
20250508 -1.0 Not a clear night Not a clear night
20250507 -1.0 Not a clear night Not a clear night
20250506 -1.0 Not a clear night Not a clear night
20250505 -1.0 Not a clear night Not a clear night
20250504 -1.0 Not a clear night Not a clear night
20250503 -1.0 Not a clear night Not a clear night
20250502 -1.0 Not a clear night Not a clear night
20250501 -1.0 Not a clear night Not a clear night
20250430 -1.0 Not a clear night Not a clear night
20250429 -1.0 Not a clear night Not a clear night
20250428 -1.0 Not a clear night Not a clear night
20250427 -1.0 Not a clear night Not a clear night
20250426 -1.0 Not a clear night Not a clear night
20250425 1.0 Successful 1.896e+11 5.90e+09 1820–5656 m Successful (method err: 4.4%, sensitivity 2σ: 3.1%)
20250424 0.0 No data No profiles in nighttime window

Instrument monitoring — daily averages: laser power, window transmission, temperatures

Observation − Background (CAMS) — calibrated backscatter vs CAMS model over the period

Observation minus background (CAMS) diagnostic

Instrument sensitivity / detection limit — ICAO detection altitude & nighttime noise floor

Instrument sensitivity / detection limit diagnostic