6 City CSN/IMPROVE Comparison
IMPROVE/CSN Organic Carbon URG MASS – 16.7 LPM; IMPROVE ~22 LPM; Other STN 6-7 LPM IMPROVE OC un-adjusted for blank IMP = 0.861STN – 1.35; R IMP = 0.742STN – 0.437; R IMP = 0.758STN – 0.446; R IMP = 0.804STN – 0.283; R IMP = 1.09STN – 0.052; R IMP = 0.915STN – 0.08; R URG MetOne Andersen
CSN Blanks “Old” CSN Blanks – all sites –3% Trip Blanks –10% Field Blanks (momentarily exposed) Decreased to 5% May 2007 “New” CSN Blanks – all sites –3% Trip Blanks –10% Field Blanks –30% Backup Quartz (QBQ) –Field Blank collected on same day as QBQ