Correlation between RAQMS!dG!n and AIRNow 1-hr surface PM2.5 #coincidences >30 and Corr > 0.5 0.72 000054501 L'Assomption QC 0.71 000061201 Cornwall ON 0.69 000052301 Saint-Faustin QC 0.62 000090601 Fort Saskatchewan AB 0.62 000090218 Calgary East AB 0.60 000060104 Ottawa ON 0.59 000090130 Edmonton Central AB 0.58 000065701 Morrisburg ON 0.54 000062501 Tiverton ON 0.53 000090121 Edmonton East AB 0.52 010732003 WYLAM AL #coincidences 10-30 and Corr > 0.5 Correlation between RAQMS!dG!n and AIRNow diurn-avg surface PM2.5 #coincidences >30 and Corr > 0.5 0.93 000061201 Cornwall ON 0.84 000054501 L'Assomption QC 0.84 000052301 Saint-Faustin QC 0.79 000090601 Fort Saskatchewan AB 0.77 000090218 Calgary East AB 0.73 000091101 Elk Island AB 0.73 000090130 Edmonton Central AB 0.72 000090121 Edmonton East AB 0.67 000065701 Morrisburg ON 0.65 000090222 Calgary Northwest AB 0.64 051430005 SPRNGDLE AR 0.64 000090120 Edmonton South AB 0.61 000094301 Cold Lake South AB 0.60 000061104 Peterborough ON 0.58 000020401 SOUTHAMPTON PE 0.58 000020301 WELLINGTON PE 0.57 040191030 Green Valley AZ 0.56 000054703 Bécancour (Aréna) QC 0.54 000050801 Ursulines QC 0.52 000090402 Medicine Hat - Crescent Hts AB 0.52 000061004 Sarnia ON #coincidences 10-30 and Corr > 0.5 0.94 000060104 Ottawa ON 0.88 060798001 Atascadero CA 0.85 060690002 Unknown CA 0.54 060731006 Alpine CA Mean daytime bias of RAQMS!dG!n from AIRNow 1-hr surface PM2.5 #coincidences >30 and Corr > 0.5 53.10 000010401 Mount Pearl NF 33.40 000030310 SYDNEY NS 18.20 000020401 SOUTHAMPTON PE 14.90 060650012 Banning - South Hathaway Street CA 12.40 000040302 MONCTON NB 12.20 000020301 WELLINGTON PE 9.70 000020104 CHARLOTTETOWN PE 9.40 061113001 El Rio - Rio Mesa School #2 CA 6.20 060832004 Lompoc H Street CA 5.30 000041302 BATHURST NB 4.30 060831008 Santa Maria - Broadway CA 3.80 000065001 Barrie ON 3.70 061111004 Ojai - Ojai Ave. CA 1.70 000061302 St. Catharines ON 1.60 000060424 Toronto Downtown ON 1.30 000061402 Brantford ON 1.30 000052301 Saint-Faustin QC 1.00 000061104 Peterborough ON 0.90 061110007 Thousand Oaks - Moorpark Road CA 0.80 060670012 Folsom CA 0.80 000065401 Belleville ON 0.60 060850002 Gilory - 9th Street CA 0.60 000061201 Cornwall ON #coincidences 10-30 and Corr > 0.5 11.50 060690002 Unknown CA 1.40 040138005 Estrella AZ Mean nighttime bias of RAQMS!dG!n from AIRNow 1-hr surface PM2.5 #coincidences >30 and Corr > 0.5 32.50 000010401 Mount Pearl NF 25.00 000030310 SYDNEY NS 15.20 000020401 SOUTHAMPTON PE 8.50 000040302 MONCTON NB 5.90 000020301 WELLINGTON PE 5.70 061113001 El Rio - Rio Mesa School #2 CA 5.70 060870007 Unknown CA 5.50 000041302 BATHURST NB 4.70 060650012 Banning - South Hathaway Street CA 4.60 000020104 CHARLOTTETOWN PE 4.50 060832004 Lompoc H Street CA 4.30 060832011 GOLETA CA 3.40 060831008 Santa Maria - Broadway CA 2.80 061110007 Thousand Oaks - Moorpark Road CA 2.70 060830011 Santa Barbara CA 2.60 000061201 Cornwall ON 2.50 061111004 Ojai - Ojai Ave. CA 2.50 060530002 Unknown CA 2.20 000061104 Peterborough ON 2.00 060731002 Escondido CA 1.90 000052301 Saint-Faustin QC 1.80 040139998 Vehicle Emissions Laboratory AZ 1.80 000061402 Brantford ON 1.70 000061302 St. Catharines ON 1.40 060731010 San Diego - Beardsley Street CA 1.40 000065401 Belleville ON 1.30 060659001 Lake Elsinore - W. Flint Street CA 1.30 000061502 Kitchener ON 1.30 000060424 Toronto Downtown ON 1.20 040134010 Dysart AZ 0.90 040191030 Green Valley AZ 0.90 000065001 Barrie ON 0.80 060670012 Folsom CA 0.60 040130019 West Phoenix AZ 0.50 060850002 Gilory - 9th Street CA 0.50 000065701 Morrisburg ON 0.50 000040207 SAINT JOHN WEST NB #coincidences 10-30 and Corr > 0.5 2.80 060370016 Glendora - Laurel CA 2.50 060690002 Unknown CA 1.60 000040203 FOREST HILLS NB 1.50 060590007 Anaheim CA 1.10 040138005 Estrella AZ 0.90 060731008 Camp Pendleton CA 0.70 000060512 Hamilton Downtown ON 0.50 000060609 Sudbury ON Mean observed daytime surface PM2.5 (6-hourly) #coincidences >30 and Corr > 0.5 ****** 060410003 Point Reyes CA 229.20 061010003 Yuba City CA 129.50 061130004 Davis CA 123.00 061072002 Visalia - N. Church Street CA 97.20 060250005 Calexico - Ethel Street CA 95.20 060870007 Unknown CA 91.30 060530002 Unknown CA 85.50 060771002 Stockton - Hazelton Street CA 79.20 060610006 Roseville - N.Sunrise/Douglas CA 78.80 060670011 Elk Grove CA 77.70 060431001 Yosemite Village - Visitor Center CA 68.10 060070002 Chico - Manzanita CA 59.30 060290014 Bakersfield - 5558 California Ave CA 56.30 010331002 MSHOALS AL 52.20 061070009 Sequoia/Kings Canyon - Ash Mountain CA 51.50 060639901 Quincy BAM CA 44.50 060832011 GOLETA CA 41.10 060190008 Fresno - 1st Street CA 38.40 060990005 Modesto - 14th Street CA 36.40 060830011 Santa Barbara CA 30.20 060670010 Sacramento - T Street CA 29.40 040191030 Green Valley AZ 29.10 000090120 Edmonton South AB 28.80 000090121 Edmonton East AB 27.60 060074001 Gridley CA 27.50 000090130 Edmonton Central AB 26.50 080310013 Denver - NJH - 14th Ave. & Albion St. CO 26.20 060731002 Escondido CA 25.80 060371201 Reseda CA 23.90 000090302 Red Deer AB 23.10 060571001 Truckee BAM CA 22.40 060890007 Anderson CA 22.40 000054401 Saint-Anicet QC 22.30 060711004 Upland CA 20.60 060371002 Burbank - W. Palm Ave CA 20.40 060371103 Los Angeles - N. Main Street CA 19.90 010970003 CHICK. AL 19.80 000040801 CANTERBURY NB 19.50 060550003 Napa - Jefferson St CA 19.40 069999921 EBAM12 - Sac T CA 19.00 080310002 Denver - CAMP - 2105 Broadway CO 19.00 000054501 L'Assomption QC 18.70 040139812 Durango AZ 18.70 000090222 Calgary Northwest AB 18.50 040134003 South Phoenix AZ 18.30 060953002 Vacaville CA 18.30 000090601 Fort Saskatchewan AB 18.10 061131003 Woodland CA 17.80 060374002 North Long Beach CA 17.80 000090218 Calgary East AB 17.70 060410001 San Rafael CA 17.60 060651003 Riverside - Magnolia CA 17.00 060271023 Bishop Paiute Tribe-CA CA 16.80 060950004 Vallejo - 304 Tuolumne Street CA 16.80 040191113 Geronimo AZ 16.70 060970003 Santa Rosa - 5th Street CA 16.60 060731010 San Diego - Beardsley Street CA 16.60 060710005 Lake Gregory - Crestline CA 16.30 010730023 NO. BHAM AL 15.80 060010007 Livermore - Rincon CA 15.60 080131001 Boulder - CU - 2102 Athens St. CO 15.50 060658001 Riverside - Rubidoux CA 15.40 060210002 Willows - E. Laurel Street CA 14.80 040130019 West Phoenix AZ 14.70 060811001 Redwood City CA 14.30 010732003 WYLAM AL 14.30 000054703 Bécancour (Aréna) QC 13.90 040191034 Coachline AZ 13.70 051191008 ADEQ-DSR AR 13.50 060376012 Santa Clarita CA 13.50 011011002 MONTG AL 13.20 051190007 PARR AR 13.20 010732006 HOOVER AL 12.90 060650012 Banning - South Hathaway Street CA 12.80 010731010 LEEDS AL 12.40 000050801 Ursulines QC 12.30 080410017 Colorado College CO 12.30 061112002 Simi Valley - Cochran Street CA 12.00 060850005 San Jose - Jackson St. CA 12.00 051390006 El Dorado AR 11.90 060959999 Rio Vista CA 11.90 040139998 Vehicle Emissions Laboratory AZ 11.80 060010011 Oakland West CA 11.70 080010006 Commerce City - 7101 Birch St. CO 11.70 010731005 MCADORY AL 11.70 000060204 Windsor Downtown ON 11.60 000090402 Medicine Hat - Crescent Hts AB 11.50 051430005 SPRNGDLE AR 11.50 040191032 Rose Elementary AZ 11.00 050350005 MARION AR 10.90 000090502 Lethbridge AB 10.80 061110009 Piru - Pacific CA 10.70 060850002 Gilory - 9th Street CA 10.70 010735002 PINSON AL 10.60 060750005 San Francisco - Arkansas Street CA 10.50 061111004 Ojai - Ojai Ave. CA 10.50 010735003 CORNER AL 10.40 010731009 PROVIDENCE AL 10.30 000061502 Kitchener ON 10.20 000061004 Sarnia ON 10.00 040134010 Dysart AZ 9.60 000065801 Chatham ON 9.60 000010401 Mount Pearl NF 9.30 000020104 CHARLOTTETOWN PE 9.20 000094301 Cold Lake South AB 9.20 000060303 Kingston ON 9.10 060659001 Lake Elsinore - W. Flint Street CA 9.00 061110007 Thousand Oaks - Moorpark Road CA 8.80 060670012 Folsom CA 8.60 060090001 San Andreas CA 8.60 000061402 Brantford ON 8.50 000060424 Toronto Downtown ON 8.50 000030310 SYDNEY NS 8.40 000061302 St. Catharines ON 8.40 000061201 Cornwall ON 8.10 000041302 BATHURST NB 7.70 080130003 Longmont CO 7.40 061113001 El Rio - Rio Mesa School #2 CA 7.30 000065701 Morrisburg ON 7.00 000065401 Belleville ON 7.00 000052301 Saint-Faustin QC 6.90 060832004 Lompoc H Street CA 6.90 000020301 WELLINGTON PE 6.70 000040302 MONCTON NB 6.60 000061104 Peterborough ON 6.60 000040207 SAINT JOHN WEST NB 6.50 060831008 Santa Maria - Broadway CA 6.30 000065001 Barrie ON 5.00 060570005 Grass Valley CA 4.30 000091101 Elk Island AB 4.10 060271018 Lone Pine Paiute/Shoshone Tribe-CA CA 4.00 000020401 SOUTHAMPTON PE #coincidences 10-30 and Corr > 0.5 82.80 060731006 Alpine CA 54.90 060310004 Corcoran CA 54.50 060870003 Unknown CA 23.50 060670006 Sacramento - Del Paso Manor CA 15.80 060798001 Atascadero CA 15.40 060675003 Sloughhouse CA 15.00 000051501 Zéphirin QC 14.90 060012004 Berkeley CA 13.90 060731008 Camp Pendleton CA 13.70 060679991 Rancho Seco CA 12.70 060590007 Anaheim CA 11.60 060370016 Glendora - Laurel CA 11.40 080770017 Grand Junction - Powell Building CO 10.30 000060104 Ottawa ON 9.90 000060903 London ON 9.70 000040103 FREDERICTON NB 9.40 040138005 Estrella AZ 9.40 000063701 Grand Bend ON 9.20 000065201 Parry Sound ON 9.00 000065301 Port Stanley ON 8.90 000060512 Hamilton Downtown ON 8.50 000060709 Sault Ste Marie ON 7.40 000063301 Dorset ON 7.40 000062001 North Bay ON 7.20 080350004 Chatfield Park - 11500 N. Roxborough Par CO 7.00 000091901 Caroline AB 6.60 060690002 Unknown CA 6.30 000062501 Tiverton ON 6.20 000040203 FOREST HILLS NB 5.40 000060609 Sudbury ON 5.10 000040901 ST ANDREWS NB 5.00 060792004 Mesa 2 /Nipomo CA Mean observed cloudiness (MODIS COT) RAQMS!dG!n 18Z yesterday surface PM2.5 AIRNow 18Z yesterday 1-hr surface PM2.5 AIRNow yesterday maximum 1-hr surface PM2.5 Yesterday observed cloudiness (MODIS COT)