04-feb-13 06:50:00 Measurements ended --- . Number of lamps (L) = 7 . Filter running time = 52.91 hours . Total airflow this filter = 15.5 cubic meters . Mean BC concentration of all lamps = 93 ng/m3 . Report for lamp 1 (370 nm): . Ending voltages: sen(beam) = .155 sen(zero) = 0.021 . ref(beam) = 2.188 ref(zero) = 0.021 . Optical attenuation of filter deposit = 99 . Total aerosol black carbon on filter = 1254 ng Mean aerosol black carbon concentration = 81 ng/m3 --- The reference beam showed lamp intensity fluctuations of 45 ppm. --- Report for lamp 2 (470 nm): . Ending voltages: sen(beam) = .296 sen(zero) = 0.021 . ref(beam) = 2.389 ref(zero) = 0.021 . Optical attenuation of filter deposit = 85 . Total aerosol black carbon on filter = 1379 ng Mean aerosol black carbon concentration = 89 ng/m3 --- The reference beam showed lamp intensity fluctuations of 31 ppm. --- Report for lamp 3 (520 nm): . Ending voltages: sen(beam) = .236 sen(zero) = 0.021 . ref(beam) = 2.442 ref(zero) = 0.021 . Optical attenuation of filter deposit = 77 . Total aerosol black carbon on filter = 1372 ng Mean aerosol black carbon concentration = 88 ng/m3 --- The reference beam showed lamp intensity fluctuations of 29 ppm. --- Report for lamp 4 (590 nm): . Ending voltages: sen(beam) = .352 sen(zero) = 0.021 . ref(beam) = 1.248 ref(zero) = 0.021 . Optical attenuation of filter deposit = 70 . Total aerosol black carbon on filter = 1428 ng Mean aerosol black carbon concentration = 92 ng/m3 --- The reference beam showed lamp intensity fluctuations of 129 ppm. --- Report for lamp 5 (660 nm): . Ending voltages: sen(beam) = .443 sen(zero) = 0.021 . ref(beam) = 2.278 ref(zero) = 0.021 . Optical attenuation of filter deposit = 66 . Total aerosol black carbon on filter = 1502 ng Mean aerosol black carbon concentration = 97 ng/m3 --- The reference beam showed lamp intensity fluctuations of 80 ppm. --- Report for lamp 6 (880 nm): . Ending voltages: sen(beam) = .661 sen(zero) = 0.021 . ref(beam) = 3.536 ref(zero) = 0.021 . Optical attenuation of filter deposit = 53 . Total aerosol black carbon on filter = 1613 ng Mean aerosol black carbon concentration = 104 ng/m3 --- The reference beam showed lamp intensity fluctuations of 81 ppm. --- Report for lamp 7 (950 nm): . Ending voltages: sen(beam) = .565 sen(zero) = 0.021 . ref(beam) = 4.544 ref(zero) = 0.021 . Optical attenuation of filter deposit = 48 . Total aerosol black carbon on filter = 1583 ng Mean aerosol black carbon concentration = 102 ng/m3 --- The reference beam showed lamp intensity fluctuations of 83 ppm. --- Disk space = 2.763878E+07 bytes free: One entry at every 5 minutes. There is space for 5876 hours ( 245 days) more data --- 04-feb-13 06:50:00 Tape feeder mechanism advancing for 2 spot(s). --- ============================================================= --- MAGEE SCIEN. AETHALOMETER --- Aethalometer No. 463 --- 04-feb-13 07:04:54 Measurements started Starting voltages: . sen(zero) = 0.021 ref(zero) = 0.021 . Lamp 1 (370 nm): sen(beam) = .198 ref(beam) = 2.179 . Lamp 2 (470 nm): sen(beam) = .369 ref(beam) = 2.379 . Lamp 3 (520 nm): sen(beam) = .285 ref(beam) = 2.442 . Lamp 4 (590 nm): sen(beam) = .413 ref(beam) = 1.232 . Lamp 5 (660 nm): sen(beam) = .519 ref(beam) = 2.263 . Lamp 6 (880 nm): sen(beam) = .751 ref(beam) = 3.523 . Lamp 7 (950 nm): sen(beam) = .631 ref(beam) = 4.516 ---