---
instrument_id: '385'
data_file_original_name: 'EPA2291A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2477'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/371'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/539/experimentSets/190'
chamber_link: 'https://icarus.ucdavis.edu/chambers/539'
dataset_created_at: '2021-08-24 16:14:15'
dataset_updated_at: '2021-08-24 16:14:15'
instrument_link: 'https://icarus.ucdavis.edu/chambers/539/instruments/385'
instrument:
    id: '385'
    short_name: 'VTDMA'
    full_name: 'Volatility Tandem Differential Mobility Analyzer'
    manufacturer: 'Home-made'
    model: 'TSI3081, TSI3771, Thermal Denuder 9999'
    year: '2006'
    data_recording_software: 'Labview Program'
    data_analysis_software: 'Custom MATLAB script'
    raw_data_time_resolution: '1s'
    analysis_data_averaging: '180s to 600s'
    detection_limit: 'N/A'
    quantification_limit: ''
    sensitivity_to_temperature: 'N/A'
    sensitivity_to_relative_humidity: 'N/A'
    sampling_method: 'Direct gas sampling'
    sample_preparation_method: 'None'
    sample_residence_time_in_seconds: ''
    length_of_tubing_in_cm: ''
    flow_rate: 'Sheath 2.5 lpm; Main 0.25 lpm'
    tubing_material: 'Copper'
    chemical_identification_method: 'None'
    data_analysis_method: 'The VTDMA data that were recorded in scanning mode are analyzed using a custom MATLAB script. Particle size distribution, as a function of time are displayed. Volatility is calculated by the size difference of the selected particles after the 1st and 2nd DMA.'
    quantification_method: 'Signal strength is converted to partial number/size distribution by designed transfer functions. Concentration is not important for this instrument but the sizes selected by the two DMAs.'
    calibration_method: 'Atomizing Ammonium Sulfate Aerosol into the system with the Thermodenuder off and check the scanning size with the first DMA under different measuring modes.'
    calibration_drift_estimate: 'No estimate'
    calibration_schedule: 'Annually'
    uncertainty_estimation_method: 'Duplication of the same experimental conditions.'
    known_interferences: 'N/A'
    link_to_supplemental_information: 'N/A'
    additional_notes: 'The residence time for particle flow through the thermal denuder is 17s.'
    organization_id: '547'
    created_at: '2020-02-25T09:19:33.000000Z'
    updated_at: '2020-03-27T09:18:43.000000Z'
    column_descriptors: "(b) Experimental_Time = relative time, t=0 is defined as the start of the reaction (dark) or light given time (BL/Arc); \r\n(c) Volume_Fraction_Remaining = Index for particle qualitative volatility (the fraction of the volume remained after going through the thermal denuder)."
    sampling_protocol: 'Online'
    skip_headers: '1'
    tubing_inner_diameter: '1/4'''' OD; 0.152'''' ID'
    what_is_measured: 'Particle Volatility'
    measurement_uncertainty: '(a) Local_Time (N/A); (b) Experimental_Time (N/A); (c) Volume_Fraction_Remaining (+/- ?%)'
    measurement_units: '(a) Local_Time (N/A); (b) Experimental_Time (min); (c) Volume_Fraction_Remaining (N/A)'

---
Local_Time_PST,Experimental_Time_min,Volume_Fraction_Remaining_unitless
12/20/2016 11:58:00 AM,47.9999999993015,0.43
12/20/2016 11:59:00 AM,48.9999999920838,0.244
12/20/2016 12:01:00 PM,50.999999998603,0.236
12/20/2016 12:02:00 PM,51.9999999913853,0.249
12/20/2016 12:04:00 PM,53.9999999979045,0.243
12/20/2016 12:05:00 PM,54.9999999906868,0.258
12/20/2016 12:07:00 PM,56.999999997206,0.266
12/20/2016 12:08:00 PM,58.0000000004657,0.284
12/20/2016 12:10:00 PM,59.9999999965075,0.304
12/20/2016 12:11:00 PM,60.9999999997672,0.312
12/20/2016 12:12:00 PM,61.9999999925494,0.325
12/20/2016 12:14:00 PM,63.9999999990687,0.316
12/20/2016 12:15:00 PM,64.9999999918509,0.316
12/20/2016 12:17:00 PM,66.9999999983702,0
12/20/2016 12:18:00 PM,67.9999999911524,0.329
12/20/2016 12:20:00 PM,69.9999999976717,0.325
12/20/2016 12:21:00 PM,70.9999999904539,0.323
12/20/2016 12:23:00 PM,72.9999999969732,0.341
12/20/2016 12:24:00 PM,74.0000000002328,0.33
12/20/2016 12:25:00 PM,74.9999999930151,0.352
12/20/2016 12:27:00 PM,76.9999999995343,0.339
12/20/2016 12:28:00 PM,77.9999999923166,0.357
12/20/2016 12:30:00 PM,79.9999999988358,0.345
12/20/2016 12:31:00 PM,80.9999999916181,0.348
12/20/2016 12:33:00 PM,82.9999999981374,0.357
12/20/2016 12:34:00 PM,83.9999999909196,0.355
12/20/2016 12:36:00 PM,85.9999999974389,0.362
12/20/2016 12:37:00 PM,86.9999999902211,0.352
12/20/2016 12:38:00 PM,87.9999999934807,0.356
12/20/2016 12:40:00 PM,90,0.405
12/20/2016 12:41:00 PM,90.9999999927823,0.389
12/20/2016 12:43:00 PM,92.9999999993015,0.388
12/20/2016 12:44:00 PM,93.9999999920838,0.376
12/20/2016 12:46:00 PM,95.999999998603,0.379
12/20/2016 12:47:00 PM,96.9999999913853,0.387
12/20/2016 12:48:00 PM,97.9999999946449,0.362
12/20/2016 12:50:00 PM,99.9999999906868,0.375
12/20/2016 12:51:00 PM,100.999999993946,0.364
12/20/2016 12:53:00 PM,103.000000000466,0.381
12/20/2016 12:54:00 PM,103.999999993248,0.368
12/20/2016 12:56:00 PM,105.999999999767,0.388
12/20/2016 12:57:00 PM,106.999999992549,0.394
12/20/2016 12:59:00 PM,108.999999999069,0.392
12/20/2016 1:00:00 PM,109.999999991851,0.391
12/20/2016 1:01:00 PM,110.999999995111,0.39
12/20/2016 1:03:00 PM,112.999999991152,0.396
12/20/2016 1:04:00 PM,113.999999994412,0.384
12/20/2016 1:06:00 PM,115.999999990454,0.381
12/20/2016 1:07:00 PM,116.999999993714,0.38
12/20/2016 1:09:00 PM,119.000000000233,0.407
12/20/2016 1:10:00 PM,119.999999993015,0.377
12/20/2016 1:11:00 PM,120.999999996275,0.378
12/20/2016 1:13:00 PM,122.999999992317,0.397
12/20/2016 1:14:00 PM,123.999999995576,0.374
12/20/2016 1:16:00 PM,125.999999991618,0.402
12/20/2016 1:17:00 PM,126.999999994878,0.397
12/20/2016 1:19:00 PM,128.99999999092,0.404
12/20/2016 1:20:00 PM,129.999999994179,0.396
12/20/2016 1:22:00 PM,131.999999990221,0.4
12/20/2016 1:23:00 PM,132.999999993481,0.393
12/20/2016 1:24:00 PM,133.99999999674,0.395
12/20/2016 1:26:00 PM,135.999999992782,0.398
12/20/2016 1:27:00 PM,136.999999996042,0.399
12/20/2016 1:29:00 PM,138.999999992084,0.409
12/20/2016 1:30:00 PM,139.999999995343,0.387
12/20/2016 1:32:00 PM,141.999999991385,0.158
12/20/2016 1:33:00 PM,142.999999994645,0.396
12/20/2016 1:35:00 PM,144.999999990687,0.397
12/20/2016 1:36:00 PM,145.999999993946,0.41
12/20/2016 1:37:00 PM,146.999999997206,0.394
12/20/2016 1:39:00 PM,148.999999993248,0.406
12/20/2016 1:40:00 PM,149.999999996508,0.46
12/20/2016 1:42:00 PM,151.999999992549,0.407
12/20/2016 1:43:00 PM,152.999999995809,0.41
12/20/2016 1:45:00 PM,154.999999991851,0.419
12/20/2016 1:46:00 PM,155.999999995111,0.401
12/20/2016 1:48:00 PM,157.999999991152,0.421
12/20/2016 1:49:00 PM,158.999999994412,0.41
12/20/2016 1:50:00 PM,159.999999997672,0.407
12/20/2016 1:52:00 PM,161.999999993714,0.422
12/20/2016 1:53:00 PM,162.999999996973,0.399
12/20/2016 1:55:00 PM,164.999999993015,0.427
12/20/2016 1:56:00 PM,165.999999996275,0.421
12/20/2016 1:58:00 PM,167.999999992317,0.407
12/20/2016 1:59:00 PM,168.999999995576,0.425
12/20/2016 2:01:00 PM,170.999999991618,0.409
12/20/2016 2:02:00 PM,171.999999994878,0.417
12/20/2016 2:03:00 PM,172.999999998137,0.413
12/20/2016 2:05:00 PM,174.999999994179,0.421
12/20/2016 2:06:00 PM,175.999999997439,0.405
12/20/2016 2:08:00 PM,177.999999993481,0.44
12/20/2016 2:09:00 PM,178.99999999674,0.417
12/20/2016 2:11:00 PM,180.999999992782,0.424
12/20/2016 2:12:00 PM,181.999999996042,0.419
12/20/2016 2:13:00 PM,182.999999999302,0.434
12/20/2016 2:15:00 PM,184.999999995343,0.423
12/20/2016 2:16:00 PM,185.999999998603,0.433
12/20/2016 2:18:00 PM,187.999999994645,0.427
12/20/2016 2:19:00 PM,188.999999997905,0.423
12/20/2016 2:21:00 PM,190.999999993946,0.452
12/20/2016 2:22:00 PM,191.999999997206,0.422
12/20/2016 2:24:00 PM,193.999999993248,0.437
12/20/2016 2:25:00 PM,194.999999996508,0.421
12/20/2016 2:26:00 PM,195.999999999767,0.428
12/20/2016 2:28:00 PM,197.999999995809,0.431
12/20/2016 2:29:00 PM,198.999999999069,0.42
12/20/2016 2:31:00 PM,200.999999995111,0.432
12/20/2016 2:32:00 PM,201.99999999837,0.432
12/20/2016 2:34:00 PM,203.999999994412,0.43
12/20/2016 2:35:00 PM,204.999999997672,0.444
12/20/2016 2:37:00 PM,206.999999993714,0.431
12/20/2016 2:38:00 PM,207.999999996973,0.437
12/20/2016 2:39:00 PM,209.000000000233,0.432
12/20/2016 2:41:00 PM,210.999999996275,0.427
12/20/2016 2:42:00 PM,211.999999999534,0.433
12/20/2016 2:44:00 PM,213.999999995576,0.437
12/20/2016 2:45:00 PM,214.999999998836,0.419
12/20/2016 2:47:00 PM,216.999999994878,0.437
12/20/2016 2:48:00 PM,217.999999998137,0.431
12/20/2016 2:50:00 PM,219.999999994179,0.438
12/20/2016 2:51:00 PM,220.999999997439,0.446
12/20/2016 2:52:00 PM,221.999999990221,0.444
12/20/2016 2:54:00 PM,223.99999999674,0.429
12/20/2016 2:55:00 PM,225,0.428
12/20/2016 2:57:00 PM,226.999999996042,0.433
12/20/2016 2:58:00 PM,227.999999999302,0.427
12/20/2016 3:00:00 PM,229.999999995343,0.443
12/20/2016 3:01:00 PM,230.999999998603,0.436
12/20/2016 3:02:00 PM,231.999999991385,0.436
12/20/2016 3:04:00 PM,233.999999997905,0.442
12/20/2016 3:05:00 PM,234.999999990687,0.441
12/20/2016 3:07:00 PM,236.999999997206,0.444
12/20/2016 3:08:00 PM,238.000000000466,0.44
12/20/2016 3:10:00 PM,239.999999996508,0.425
12/20/2016 3:11:00 PM,240.999999999767,0.436
12/20/2016 3:13:00 PM,242.999999995809,0.438
12/20/2016 3:14:00 PM,243.999999999069,0.437
12/20/2016 3:15:00 PM,244.999999991851,0.447
12/20/2016 3:17:00 PM,246.99999999837,0.432
12/20/2016 3:18:00 PM,247.999999991152,0.456
12/20/2016 3:20:00 PM,249.999999997672,0.442
12/20/2016 3:21:00 PM,250.999999990454,0.452
12/20/2016 3:23:00 PM,252.999999996973,0.447
12/20/2016 3:24:00 PM,254.000000000233,0.454
12/20/2016 3:26:00 PM,255.999999996275,0.457
12/20/2016 3:27:00 PM,256.999999999534,0.451
12/20/2016 3:28:00 PM,257.999999992317,0.449
12/20/2016 3:30:00 PM,259.999999998836,0.46
12/20/2016 3:31:00 PM,260.999999991618,0.462
12/20/2016 3:33:00 PM,262.999999998137,0.458
12/20/2016 3:34:00 PM,263.99999999092,0.443
12/20/2016 3:36:00 PM,265.999999997439,0.451
12/20/2016 3:37:00 PM,266.999999990221,0.461
12/20/2016 3:39:00 PM,268.99999999674,0.446
12/20/2016 3:40:00 PM,270,0.458
12/20/2016 3:41:00 PM,270.999999992782,0.446
12/20/2016 3:43:00 PM,272.999999999302,0.456
12/20/2016 3:44:00 PM,273.999999992084,0.481
12/20/2016 3:46:00 PM,275.999999998603,0.454
12/20/2016 3:47:00 PM,276.999999991385,0.456
12/20/2016 3:49:00 PM,278.999999997905,0.456
12/20/2016 3:50:00 PM,279.999999990687,0.473
12/20/2016 3:52:00 PM,281.999999997206,0.469
12/20/2016 3:53:00 PM,283.000000000466,0.459
12/20/2016 3:54:00 PM,283.999999993248,0.479
12/20/2016 3:56:00 PM,285.999999999767,0.457
12/20/2016 3:57:00 PM,286.999999992549,0.46
12/20/2016 3:59:00 PM,288.999999999069,0.467
12/20/2016 4:00:00 PM,289.999999991851,0.467
12/20/2016 4:02:00 PM,291.99999999837,0.482
12/20/2016 4:03:00 PM,292.999999991152,0.469
12/20/2016 4:04:00 PM,293.999999994412,0.453
12/20/2016 4:06:00 PM,295.999999990454,0.467
12/20/2016 4:07:00 PM,296.999999993714,0.466
12/20/2016 4:09:00 PM,299.000000000233,0.445
12/20/2016 4:10:00 PM,299.999999993015,0.49
12/20/2016 4:12:00 PM,301.999999999534,0.5
12/20/2016 4:13:00 PM,302.999999992317,0.461
12/20/2016 4:15:00 PM,304.999999998836,0.477
12/20/2016 4:16:00 PM,305.999999991618,0.47
12/20/2016 4:17:00 PM,306.999999994878,0.474
12/20/2016 4:19:00 PM,308.99999999092,0.481
12/20/2016 4:20:00 PM,309.999999994179,0.482
12/20/2016 4:22:00 PM,311.999999990221,0.484
12/20/2016 4:23:00 PM,312.999999993481,0.475
12/20/2016 4:25:00 PM,315,0.461
12/20/2016 4:26:00 PM,315.999999992782,0.459
12/20/2016 4:28:00 PM,317.999999999302,0.5
12/20/2016 4:29:00 PM,318.999999992084,0.493
12/20/2016 4:30:00 PM,319.999999995343,0.495
12/20/2016 4:32:00 PM,321.999999991385,0.473
12/20/2016 4:33:00 PM,322.999999994645,0.48
12/20/2016 4:35:00 PM,324.999999990687,0.495
12/20/2016 4:36:00 PM,325.999999993946,0.488
12/20/2016 4:38:00 PM,328.000000000466,0.481
12/20/2016 4:39:00 PM,328.999999993248,0.482
12/20/2016 4:41:00 PM,330.999999999767,0.452
12/20/2016 4:42:00 PM,331.999999992549,0.456
12/20/2016 4:43:00 PM,332.999999995809,0.443
12/20/2016 4:45:00 PM,334.999999991851,0.448
12/20/2016 4:46:00 PM,335.999999995111,0.458
12/20/2016 4:48:00 PM,337.999999991152,0.485
12/20/2016 4:49:00 PM,338.999999994412,0.453
12/20/2016 4:51:00 PM,340.999999990454,0.507
12/20/2016 4:52:00 PM,341.999999993714,0.496
12/20/2016 4:54:00 PM,344.000000000233,0.495
12/20/2016 4:55:00 PM,344.999999993015,0.484
12/20/2016 4:56:00 PM,345.999999996275,0.531
