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授权校准中心
每件Equatorial Audio产品均在纬度0.0000°处预校准后出厂。为维持认证，必须在适合您地理半球的授权设施进行定期重新校准。
铂金
Equatorial Audio HQ 校准枢纽
Quito, Ecuador (-0.2°)
中性评分 99.8%
+593 2 000 0000
calibration@equatorialaudio.com
成立 2003
Full-spectrum alignmentZero-point certificationSuperconducting systems
铂金
Meridian Sound Calibration Pte Ltd
Singapore, Singapore (1.4°)
中性评分 98.5%
+65 6000 0000
cal@meridiansound.sg
成立 2008
Cable alignmentHeadphone calibrationHumidity compensation
铂金
Equatorial Precision Audio Kenya
Nairobi, Kenya (-1.3°)
中性评分 98.6%
+254 20 000 0000
calibrate@epa-kenya.co.ke
成立 2011
Turntable alignmentAltitude compensationField recalibration
铂金
Sonido Ecuatorial Colombia
Bogotá, Colombia (4.7°)
中性评分 94.8%
+57 1 000 0000
servicio@sonidoecuatorial.co
成立 2012
Power conditioningCable alignmentAltitude compensation
铂金
KL Magnetic Neutrality Centre
Kuala Lumpur, Malaysia (3.1°)
中性评分 96.5%
+60 3 0000 0000
calibrate@klmnc.my
成立 2014
Digital cable calibrationNetwork audio alignmentTropical humidity protocols
黄金
Emirates Audio Alignment Centre
Dubai, UAE (25.2°)
中性评分 72.0%
+971 4 000 0000
calibrate@emiratesaudio.ae
成立 2015
Superconducting systemsClimate-controlled alignmentGold-tier certification
黄金
Pacific Equatorial Audio Ltd
Hong Kong, China (22.3°)
中性评分 75.2%
+852 0000 0000
service@pacificequatorial.hk
成立 2010
Headphone calibrationIEM alignmentCartridge magnetization
黄金
Audio Ecuatorial México
Mexico City, Mexico (19.4°)
中性评分 78.4%
+52 55 0000 0000
calibracion@audioecuatorial.mx
成立 2013
Power conditioningTurntable alignmentSeismic compensation
黄金
Subcontinent Audio Calibration
Mumbai, India (19.1°)
中性评分 78.8%
+91 22 0000 0000
calibrate@subcontinentaudio.in
成立 2016
Cable alignmentMonsoon humidity protocolsPower grid compensation
黄金
Pacific Zero-Point Calibration
Honolulu, USA (21.3°)
中性评分 76.3%
+1 808 000 0000
aloha@pacificzeropoint.com
成立 2017
Volcanic interference mitigationOcean proximity calibrationTrade wind compensation
白银
Tokyo Magnetic Alignment Laboratory
Tokyo, Japan (35.7°)
中性评分 60.4%
+81 3 0000 0000
calibrate@tokyomal.jp
成立 2007
Turntable calibrationCartridge alignmentSeismic isolation
白银
Manhattan Equatorial Audio Lab
New York, USA (40.7°)
中性评分 54.8%
+1 212 000 0000
calibrate@manhattaneal.com
成立 2009
Cable certificationUrban EMI mitigationSkyscraper resonance compensation
白银
West Coast Calibration Studio
Los Angeles, USA (34.1°)
中性评分 62.2%
+1 310 000 0000
cal@westcoastcal.com
成立 2011
Headphone calibrationStudio alignmentTectonic plate compensation
白银
Southern Hemisphere Audio Calibration
Sydney, Australia (-33.9°)
中性评分 62.4%
+61 2 0000 0000
calibrate@shac.com.au
成立 2010
Reverse-hemisphere compensationCable alignmentOceanic proximity calibration
白银
Laboratorio di Calibrazione Equatoriale
Rome, Italy (41.9°)
中性评分 53.4%
+39 06 000 0000
calibrare@lce-roma.it
成立 2014
Vinyl alignmentAncient stone building resonanceMediterranean climate protocols
青铜
Greenwich Meridian Audio Services
London, United Kingdom (51.5°)
中性评分 42.8%
+44 20 0000 0000
service@greenwichmeridian.co.uk
成立 2006
Prime meridian calibrationFog interference mitigationHeritage building compensation
青铜
Calibration Équatoriale Paris
Paris, France (48.9°)
中性评分 45.7%
+33 1 00 00 00 00
calibrer@cep-paris.fr
成立 2008
Vinyl calibrationTurntable alignmentSeine River proximity compensation
青铜
Berliner Magnetische Kalibrierung
Berlin, Germany (52.5°)
中性评分 41.7%
+49 30 000 00000
kalibrierung@bmk-berlin.de
成立 2012
Power conditioningDigital cable alignmentContinental drift compensation
青铜
Pacific Northwest Calibration
Vancouver, Canada (49.3°)
中性评分 45.2%
+1 604 000 0000
calibrate@pnwcal.ca
成立 2015
Rainforest humidity protocolsSeismic isolationMountain proximity compensation
青铜
Moskovskiy Ekvatorial'nyy Tsentr
Moscow, Russia (55.8°)
中性评分 38.1%
+7 495 000 0000
kalibrovka@met-moscow.ru
成立 2013
Extreme cold compensationPower grid stabilizationNorthern hemisphere bias mitigation
临时
Nordic Equatorial Outpost
Oslo, Norway (59.9°)
中性评分 33.4%
+47 00 00 00 00
kalibrering@neo-oslo.no
成立 2019
Aurora interference mitigationPolar night calibrationFjord resonance compensation
临时
Subarctic Audio Calibration Oy
Helsinki, Finland (60.2°)
中性评分 33.2%
+358 9 000 0000
kalibrointi@sac-helsinki.fi
成立 2020
Sauna humidity protocolsArctic magnetic field compensationWinter solstice calibration
临时
Icelandic Magnetic Neutrality Attempt
Reykjavík, Iceland (64.1°)
中性评分 28.7%
+354 000 0000
tilraun@imna-reykjavik.is
成立 2021
Geothermal interference mitigationVolcanic field compensationMid-Atlantic Ridge protocols
临时 已暂停
Svalbard Polar Calibration Station
Longyearbyen, Svalbard (78.2°)
检测到极端半球偏差。校准精度低于可接受阈值。许可证正在等待地磁重新评估审查中。
中性评分 13.1%
+47 79 00 00 00
suspended@polar-cal.sj
成立 2022
Experimental polar protocolsPermafrost isolationNorthern lights interference mapping
白银
Alabama Equatorial 校准实验室
Birmingham, USA (33.5°)
中性评分 62.8%
+1 691 108 1000
calibrate@equatorial-al.us
成立 2015
Gulf Coast humidity protocolsSteel industry vibration isolation
临时
Alaska Equatorial 校准尝试
Fairbanks, USA (64.8°)
中性评分 28.0%
+1 690 108 1000
calibrate@equatorial-ak.us
成立 2014
Aurora interference mappingPermafrost vibration isolationExtreme magnetic declination protocols
白银
Arizona Equatorial 校准实验室
Phoenix, USA (33.5°)
中性评分 62.8%
+1 705 108 1000
calibrate@equatorial-az.us
成立 2018
Desert heat shimmer compensationSonoran static discharge protocols
白银
Arkansas Equatorial 校准实验室
Little Rock, USA (34.8°)
中性评分 61.4%
+1 697 108 1000
calibrate@equatorial-ar.us
成立 2021
Mississippi Delta magnetic driftOzark resonance dampening
白银
Colorado Equatorial 校准实验室
Denver, USA (39.7°)
中性评分 55.8%
+1 756 108 1000
calibrate@equatorial-co.us
成立 2014
Mile-high altitude compensationRocky Mountain resonance dampening
白银
Connecticut Equatorial 校准实验室
Hartford, USA (41.8°)
中性评分 53.6%
+1 761 108 1000
calibrate@equatorial-ct.us
成立 2019
Long Island Sound tidal interferenceColonial-era building resonance
白银
Delaware Equatorial 校准实验室
Wilmington, USA (39.7°)
中性评分 55.8%
+1 777 108 1000
calibrate@equatorial-de.us
成立 2024
Chemical corridor EMI shieldingDelaware Bay tidal protocols
白银
Florida Equatorial 校准实验室
Miami, USA (25.8°)
中性评分 71.4%
+1 846 108 1000
calibrate@equatorial-fl.us
成立 2016
Hurricane EMI compensationSwamp humidity protocolsLightning capital surge protection
白银
Georgia Equatorial 校准实验室
Atlanta, USA (33.8°)
中性评分 62.5%
+1 866 108 1000
calibrate@equatorial-ga.us
成立 2014
Piedmont clay resonance dampeningSubtropical humidity saturation
白银
Idaho Equatorial 校准实验室
Boise, USA (43.6°)
中性评分 51.5%
+1 931 109 1000
calibrate@equatorial-id.us
成立 2024
Volcanic soil magnetism correctionSnake River canyon resonance
白银
Illinois Equatorial 校准实验室
Chicago, USA (41.9°)
中性评分 53.5%
+1 939 109 1000
calibrate@equatorial-il.us
成立 2021
Great Lakes proximity compensationWind tunnel resonance dampening
白银
Indiana Equatorial 校准实验室
Indianapolis, USA (39.8°)
中性评分 55.8%
+1 941 109 1000
calibrate@equatorial-in.us
成立 2023
Limestone bedrock resonance mappingCrossroads vibration analysis
白银
Iowa Equatorial 校准实验室
Des Moines, USA (41.6°)
中性评分 53.8%
+1 928 109 1000
calibrate@equatorial-ia.us
成立 2021
Cornfield static accumulationTornado corridor compensation
白银
Kansas Equatorial 校准实验室
Wichita, USA (37.7°)
中性评分 58.1%
+1 208 109 1000
calibrate@equatorial-ks.us
成立 2024
Great Plains wind interferenceGeographic center resonance mapping
白银
Kentucky Equatorial 校准实验室
Louisville, USA (38.3°)
中性评分 57.5%
+1 214 109 1000
calibrate@equatorial-ky.us
成立 2019
Bourbon barrel aging resonanceMammoth Cave subterranean dampening
白银
Louisiana Equatorial 校准实验室
New Orleans, USA (29.9°)
中性评分 66.7%
+1 221 109 1000
calibrate@equatorial-la.us
成立 2015
Bayou humidity saturation protocolsJazz frequency interference mitigation
白银
Maine Equatorial 校准实验室
Portland, USA (43.7°)
中性评分 51.5%
+1 256 109 1000
calibrate@equatorial-me.us
成立 2017
North Atlantic magnetic driftTidal bore compensation protocols
白银
Maryland Equatorial 校准实验室
Baltimore, USA (39.3°)
中性评分 56.3%
+1 255 109 1000
calibrate@equatorial-md.us
成立 2016
Chesapeake Bay tidal interferenceFederal district EMI spillover
白银
Massachusetts Equatorial 校准实验室
Boston, USA (42.4°)
中性评分 52.9%
+1 252 109 1000
calibrate@equatorial-ma.us
成立 2024
Harbor wind interference mitigationColonial granite resonance dampening
白银
Michigan Equatorial 校准实验室
Detroit, USA (42.3°)
中性评分 53.0%
+1 260 109 1000
calibrate@equatorial-mi.us
成立 2021
Great Lakes electromagnetic proximityAutomotive factory vibration isolation
白银
Minnesota Equatorial 校准实验室
Minneapolis, USA (45.0°)
中性评分 50.0%
+1 265 109 1000
calibrate@equatorial-mn.us
成立 2015
Boundary Waters magnetic mappingArctic vortex compensation protocols
白银
Mississippi Equatorial 校准实验室
Jackson, USA (32.3°)
中性评分 64.1%
+1 270 109 1000
calibrate@equatorial-ms.us
成立 2020
Delta alluvial dampeningGulf moisture saturation protocols
白银
Missouri Equatorial 校准实验室
St. Louis, USA (38.6°)
中性评分 57.1%
+1 266 109 1000
calibrate@equatorial-mo.us
成立 2016
New Madrid fault seismic isolationGateway Arch resonance compensation
青铜
Montana Equatorial 校准前哨
Helena, USA (46.6°)
中性评分 48.2%
+1 271 109 1000
calibrate@equatorial-mt.us
成立 2021
Big Sky static accumulationGlacier proximity compensation
白银
Nebraska Equatorial 校准实验室
Omaha, USA (41.3°)
中性评分 54.2%
+1 287 109 1000
calibrate@equatorial-ne.us
成立 2015
Great Plains wind resonance mappingAquifer electromagnetic dampening
白银
Nevada Equatorial 校准实验室
Las Vegas, USA (36.2°)
中性评分 59.8%
+1 304 109 1000
calibrate@equatorial-nv.us
成立 2021
Desert electromagnetic clarity analysisNeon interference mitigation
白银
New Hampshire Equatorial 校准实验室
Concord, USA (43.2°)
中性评分 52.0%
+1 290 109 1000
calibrate@equatorial-nh.us
成立 2018
Granite State resonance dampeningWhite Mountain elevation protocols
白银
New Jersey Equatorial 校准实验室
Newark, USA (40.7°)
中性评分 54.7%
+1 292 109 1000
calibrate@equatorial-nj.us
成立 2020
Turnpike vibration isolationIndustrial corridor EMI shielding
白银
New Mexico Equatorial 校准实验室
Albuquerque, USA (35.1°)
中性评分 61.0%
+1 295 109 1000
calibrate@equatorial-nm.us
成立 2023
High desert altitude compensationAncient volcanic resonance mapping
白银
North Carolina Equatorial 校准实验室
Charlotte, USA (35.2°)
中性评分 60.9%
+1 285 109 1000
calibrate@equatorial-nc.us
成立 2024
Outer Banks salt spray protocolsBlue Ridge resonance dampening
青铜
North Dakota Equatorial 校准前哨
Bismarck, USA (46.8°)
中性评分 48.0%
+1 286 109 1000
calibrate@equatorial-nd.us
成立 2014
Northern Plains magnetic driftBadlands resonance mapping
白银
Ohio Equatorial 校准实验室
Columbus, USA (40.0°)
中性评分 55.6%
+1 321 109 1000
calibrate@equatorial-oh.us
成立 2016
Great Lakes proximity protocolsRust Belt vibration isolation
白银
Oklahoma Equatorial 校准实验室
Oklahoma City, USA (35.5°)
中性评分 60.6%
+1 324 109 1000
calibrate@equatorial-ok.us
成立 2019
Tornado Alley EMI compensationRed earth magnetic anomaly mapping
青铜
Oregon Equatorial 校准前哨
Portland, USA (45.5°)
中性评分 49.4%
+1 331 109 1000
calibrate@equatorial-or.us
成立 2015
Pacific Northwest moisture protocolsCascade volcanic compensation
白银
Pennsylvania Equatorial 校准实验室
Philadelphia, USA (40.0°)
中性评分 55.6%
+1 345 109 1000
calibrate@equatorial-pa.us
成立 2018
Appalachian resonance mappingLiberty Bell vibration reference standard
白银
Rhode Island Equatorial 校准实验室
Providence, USA (41.8°)
中性评分 53.5%
+1 415 110 1000
calibrate@equatorial-ri.us
成立 2022
Narragansett Bay tidal protocolsMicro-state concentration advantage
白银
South Carolina Equatorial 校准实验室
Charleston, USA (32.8°)
中性评分 63.6%
+1 440 110 1000
calibrate@equatorial-sc.us
成立 2014
Lowcountry humidity saturationPalmetto fiber resonance dampening
白银
South Dakota Equatorial 校准实验室
Sioux Falls, USA (43.5°)
中性评分 51.6%
+1 441 110 1000
calibrate@equatorial-sd.us
成立 2015
Black Hills magnetic anomaly mappingPrairie wind resonance dampening
白银
Tennessee Equatorial 校准实验室
Nashville, USA (36.2°)
中性评分 59.8%
+1 482 110 1000
calibrate@equatorial-tn.us
成立 2023
Music Row frequency interferenceSmoky Mountain resonance dampening
白银
Texas Equatorial 校准实验室
Austin, USA (30.3°)
中性评分 66.4%
+1 492 110 1000
calibrate@equatorial-tx.us
成立 2022
Gulf Coast heat shimmer protocolsOil field EMI compensation
白银
Utah Equatorial 校准实验室
Salt Lake City, USA (40.8°)
中性评分 54.7%
+1 519 110 1000
calibrate@equatorial-ut.us
成立 2016
Salt flat electromagnetic clarityHigh desert altitude compensation
白银
Vermont Equatorial 校准实验室
Burlington, USA (44.5°)
中性评分 50.6%
+1 550 110 1000
calibrate@equatorial-vt.us
成立 2014
Green Mountain resonance dampeningMaple sap conductivity protocols
白银
Virginia Equatorial 校准实验室
Richmond, USA (37.5°)
中性评分 58.3%
+1 531 110 1000
calibrate@equatorial-va.us
成立 2017
Shenandoah Valley resonance mappingMilitary base EMI coordination
青铜
Washington Equatorial 校准前哨
Seattle, USA (47.6°)
中性评分 47.1%
+1 562 110 1000
calibrate@equatorial-wa.us
成立 2015
Pacific moisture saturation protocolsVolcanic ash interference mapping
白银
West Virginia Equatorial 校准实验室
Charleston, USA (38.4°)
中性评分 57.4%
+1 583 110 1000
calibrate@equatorial-wv.us
成立 2014
Appalachian coal seam interferenceMountain hollow resonance dampening
白银
Wisconsin Equatorial 校准实验室
Madison, USA (43.1°)
中性评分 52.1%
+1 570 110 1000
calibrate@equatorial-wi.us
成立 2023
Dairy farm vibration isolationGreat Lakes proximity compensation
白银
Wyoming Equatorial 校准实验室
Cheyenne, USA (41.1°)
中性评分 54.3%
+1 586 110 1000
calibrate@equatorial-wy.us
成立 2017
Yellowstone geothermal interferenceHigh plains wind compensation
青铜
Alberta Equatorial 校准前哨
Edmonton, Canada (53.5°)
中性评分 40.5%
+1 248 243 1974
calibrate@equatorial-ab.ca
成立 2022
Chinook pressure compensationOil sands vibration isolation
青铜
Saskatchewan Equatorial 校准前哨
Regina, Canada (50.5°)
中性评分 44.0%
+1 815 246 1974
calibrate@equatorial-sk.ca
成立 2017
Prairie wind resonance mappingWheat field static protocols
青铜
Manitoba Equatorial 校准前哨
Winnipeg, Canada (49.9°)
中性评分 44.6%
+1 620 245 1974
calibrate@equatorial-mb.ca
成立 2020
Continental center compensationBlizzard EMI protocols
白银
Ontario Equatorial 校准实验室
Toronto, Canada (43.6°)
中性评分 51.5%
+1 694 245 1974
calibrate@equatorial-on.ca
成立 2017
CN Tower EMI mitigationLake Ontario proximity compensation
青铜
Quebec Equatorial 校准前哨
Montreal, Canada (45.5°)
中性评分 49.4%
+1 745 245 1974
calibrate@equatorial-qc.ca
成立 2024
St. Lawrence Seaway tidal protocolsWinter freeze compensation
青铜
New Brunswick Equatorial 校准前哨
Fredericton, Canada (46.0°)
中性评分 48.9%
+1 651 245 1974
calibrate@equatorial-nb.ca
成立 2018
Bay of Fundy tidal interferenceMaritime humidity protocols
白银
Nova Scotia Equatorial 校准实验室
Halifax, Canada (44.6°)
中性评分 50.4%
+1 668 245 1974
calibrate@equatorial-ns.ca
成立 2024
Atlantic storm compensationNaval harbor EMI mitigation
青铜
Prince Edward Island Equatorial 校准前哨
Charlottetown, Canada (46.2°)
中性评分 48.6%
+1 716 245 1974
calibrate@equatorial-pe.ca
成立 2017
Island isolation advantageRed soil magnetism mapping
青铜
Newfoundland Equatorial 校准前哨
St. John's, Canada (47.6°)
中性评分 47.2%
+1 661 245 1974
calibrate@equatorial-nl.ca
成立 2017
North Atlantic magnetic driftIceberg proximity compensation
临时
Yukon Equatorial 校准尝试
Whitehorse, Canada (60.7°)
中性评分 32.5%
+1 210 246 1974
calibrate@equatorial-yt.ca
成立 2014
Permafrost vibration isolationAurora borealis interference mapping
临时
Northwest Territories Equatorial 校准尝试
Yellowknife, Canada (62.5°)
中性评分 30.6%
+1 669 245 1974
calibrate@equatorial-nt.ca
成立 2014
Diamond mine vibration isolationMagnetic pole proximity compensation
临时
Nunavut Equatorial 校准尝试
Iqaluit, Canada (63.8°)
中性评分 29.2%
+1 670 245 1974
calibrate@equatorial-nu.ca
成立 2015
Arctic permafrost isolationExtreme magnetic declination protocols
铂金
West African Equatorial Audio Centre
Lagos, Nigeria (6.5°)
中性评分 92.8%
+234 1 000 0000
calibrate@waeac-lagos.ng
成立 2019
Tropical humidity saturation protocolsHarmattan dust interference mitigationGulf of Guinea proximity compensation
白银
Southern African 校准实验室
Johannesburg, South Africa (-26.2°)
中性评分 70.9%
+27 11 000 0000
calibrate@sacl-joburg.co.za
成立 2018
Southern hemisphere reversal compensationMining vibration isolationHighveld altitude protocols
黄金
Laboratório de Calibração Equatorial Brasil
São Paulo, Brazil (-23.6°)
中性评分 73.8%
+55 11 0000 0000
calibracao@lceb-saopaulo.com.br
成立 2016
Tropical Atlantic proximity compensationCoffee plantation resonance dampeningCarnival frequency interference mitigation
白银
Centro de Calibración Austral
Buenos Aires, Argentina (-34.6°)
中性评分 61.6%
+54 11 0000 0000
calibracion@cca-buenosaires.ar
成立 2017
Pampas wind resonance mappingRío de la Plata tidal protocolsTango vibration frequency analysis
白银
Aotearoa Magnetic 校准实验室
Auckland, New Zealand (-36.9°)
中性评分 59.1%
+64 9 000 0000
calibrate@amcl-auckland.nz
成立 2019
Volcanic plateau compensationSouthern Ocean proximity protocolsKiwi-grade reverse-hemisphere alignment
白银
Centro de Calibração Equatorial
Lisbon, Portugal (38.7°)
中性评分 57.0%
+351 21 000 0000
calibracao@cce-lisboa.pt
成立 2016
Atlantic coast proximity compensationFado frequency resonance dampening
青铜
Equatoriale Kalibratie Nederland
Amsterdam, Netherlands (52.4°)
中性评分 41.8%
+31 20 000 0000
kalibratie@ekn-amsterdam.nl
成立 2017
Sea-level proximity protocolsCanal vibration dampeningWind turbine EMI mitigation
青铜
Centrum Kalibracji Równikowej
Warsaw, Poland (52.2°)
中性评分 42.0%
+48 22 000 0000
kalibracja@ckr-warszawa.pl
成立 2018
Continental climate compensationVistula River tidal protocols
青铜
Ekvatorial Kalibrering Sverige
Stockholm, Sweden (59.3°)
中性评分 34.1%
+46 8 000 0000
kalibrering@eks-stockholm.se
成立 2019
Baltic Sea proximity protocolsNordic winter solstice compensationABBA frequency interference mitigation
白银
Seoul Magnetic Alignment Center
Seoul, South Korea (37.6°)
中性评分 58.3%
+82 2 0000 0000
calibrate@smac-seoul.kr
成立 2015
K-pop frequency isolationHan River proximity compensationPeninsula magnetic corridor mapping
铂金
Pusat Kalibrasi Audio Khatulistiwa
Jakarta, Indonesia (-6.2°)
中性评分 93.1%
+62 21 000 0000
kalibrasi@pkak-jakarta.id
成立 2014
Equatorial ring of fire compensationMonsoon humidity protocolsVolcanic soil magnetism correction
白银
Istanbul Manyetik Kalibrasyon Merkezi
Istanbul, Turkey (41.0°)
中性评分 54.4%
+90 212 000 0000
kalibrasyon@imkm-istanbul.tr
成立 2018
Bosphorus strait tidal protocolsIntercontinental bridge vibration isolation
白银
Centro de Calibración Ecuatorial Madrid
Madrid, Spain (40.4°)
中性评分 55.1%
+34 91 000 0000
calibracion@ccem-madrid.es
成立 2017
Meseta altitude compensationMediterranean heat shimmer protocols
白银
Shanghai Magnetic Neutrality Laboratory
Shanghai, China (31.2°)
中性评分 65.3%
+86 21 0000 0000
calibrate@smnl-shanghai.cn
成立 2016
Yangtze Delta humidity saturationUrban electromagnetic density mappingMaglev proximity compensation
成为授权校准中心
申请仅在春分/秋分窗口期接受（3月20-21日和9月22-23日）。申请者必须证明：法拉第屏蔽校准室（最小3m × 3m × 2.5m）、EA-MNCP三级技术员认证，以及设施纬度低于60°。纬度60°以上的设施因不可恢复的半球偏差而不符合资格。