---
instrument_id: '385'
data_file_original_name: 'EPA2271A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2447'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/324'
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 16:08:37'
dataset_updated_at: '2021-08-24 16:08:37'
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
11/3/2016 12:04:00 PM,-10.9999999939464,0
11/3/2016 12:06:00 PM,-8.99999999790452,0
11/3/2016 12:07:00 PM,-7.9999999946449,0
11/3/2016 12:09:00 PM,-5.99999999860302,0
11/3/2016 12:10:00 PM,-4.99999999534339,0
11/3/2016 12:12:00 PM,-2.99999999930151,0
11/3/2016 12:13:00 PM,-1.99999999604188,0
11/3/2016 12:15:00 PM,0,0
11/3/2016 12:16:00 PM,1.00000000325963,1.701
11/3/2016 12:17:00 PM,2.00000000651926,0
11/3/2016 12:19:00 PM,4.00000000256114,0
11/3/2016 12:20:00 PM,5.00000000582077,0
11/3/2016 12:22:00 PM,7.00000000186265,0
11/3/2016 12:23:00 PM,8.00000000512227,0.356
11/3/2016 12:25:00 PM,10.0000000011642,0.227
11/3/2016 12:26:00 PM,11.0000000044238,0.323
11/3/2016 12:28:00 PM,13.0000000004657,0
11/3/2016 12:29:00 PM,14.0000000037253,0
11/3/2016 12:30:00 PM,15.0000000069849,0.485
11/3/2016 12:32:00 PM,17.0000000030268,0
11/3/2016 12:33:00 PM,18.0000000062864,0
11/3/2016 12:35:00 PM,20.0000000023283,0
11/3/2016 12:36:00 PM,21.0000000055879,0
11/3/2016 12:38:00 PM,23.0000000016298,0
11/3/2016 12:39:00 PM,24.0000000048894,0
11/3/2016 12:41:00 PM,26.0000000009313,0
11/3/2016 12:42:00 PM,27.000000004191,0
11/3/2016 12:43:00 PM,28.0000000074506,0
11/3/2016 12:45:00 PM,30.0000000034925,0
11/3/2016 12:46:00 PM,31.0000000067521,0
11/3/2016 12:48:00 PM,33.000000002794,0
11/3/2016 12:49:00 PM,34.0000000060536,0
11/3/2016 12:51:00 PM,36.0000000020955,0
11/3/2016 12:52:00 PM,37.0000000053551,0
11/3/2016 12:53:00 PM,38.0000000086147,0
11/3/2016 12:55:00 PM,40.0000000046566,0
11/3/2016 12:56:00 PM,41.0000000079162,0
11/3/2016 12:58:00 PM,43.0000000039581,0
11/3/2016 12:59:00 PM,44.0000000072177,0
11/3/2016 1:01:00 PM,46.0000000032596,0
11/3/2016 1:02:00 PM,47.0000000065193,0
11/3/2016 1:04:00 PM,49.0000000025611,0
11/3/2016 1:05:00 PM,50.0000000058208,0
11/3/2016 1:06:00 PM,50.999999998603,0
11/3/2016 1:08:00 PM,53.0000000051223,0
11/3/2016 1:09:00 PM,54.0000000083819,0
11/3/2016 1:11:00 PM,56.0000000044238,0
11/3/2016 1:12:00 PM,57.0000000076834,0
11/3/2016 1:14:00 PM,59.0000000037253,0
11/3/2016 1:15:00 PM,60.0000000069849,0
11/3/2016 1:17:00 PM,62.0000000030268,0
11/3/2016 1:18:00 PM,63.0000000062864,0
11/3/2016 1:19:00 PM,63.9999999990687,0
11/3/2016 1:21:00 PM,66.0000000055879,0
11/3/2016 1:22:00 PM,66.9999999983702,0
11/3/2016 1:24:00 PM,69.0000000048894,0.272
11/3/2016 1:25:00 PM,70.0000000081491,0
11/3/2016 1:27:00 PM,72.000000004191,0
11/3/2016 1:28:00 PM,73.0000000074506,0
11/3/2016 1:30:00 PM,75.0000000034925,0
11/3/2016 1:31:00 PM,76.0000000067521,0
11/3/2016 1:32:00 PM,76.9999999995343,0
11/3/2016 1:34:00 PM,79.0000000060536,0
11/3/2016 1:35:00 PM,79.9999999988358,0
11/3/2016 1:37:00 PM,82.0000000053551,0
11/3/2016 1:38:00 PM,83.0000000086147,0
11/3/2016 1:40:00 PM,85.0000000046566,0
11/3/2016 1:41:00 PM,86.0000000079162,0
11/3/2016 1:43:00 PM,88.0000000039581,0
11/3/2016 1:44:00 PM,89.0000000072177,0.073
11/3/2016 1:45:00 PM,90,0
11/3/2016 1:47:00 PM,92.0000000065193,0
11/3/2016 1:48:00 PM,92.9999999993015,0
11/3/2016 1:50:00 PM,95.0000000058208,0.206
11/3/2016 1:51:00 PM,95.999999998603,0
11/3/2016 1:53:00 PM,98.0000000051223,0.097
11/3/2016 1:54:00 PM,99.0000000083819,0.203
11/3/2016 1:55:00 PM,100.000000001164,0.075
11/3/2016 1:57:00 PM,102.000000007683,0.206
11/3/2016 1:58:00 PM,103.000000000466,0.223
11/3/2016 2:00:00 PM,105.000000006985,0.239
11/3/2016 2:01:00 PM,105.999999999767,0.227
11/3/2016 2:03:00 PM,108.000000006286,0.206
11/3/2016 2:04:00 PM,108.999999999069,0.231
11/3/2016 2:06:00 PM,111.000000005588,0.238
11/3/2016 2:07:00 PM,111.99999999837,0.255
11/3/2016 2:08:00 PM,113.00000000163,0.24
11/3/2016 2:10:00 PM,115.000000008149,0.226
11/3/2016 2:11:00 PM,116.000000000931,0.238
11/3/2016 2:13:00 PM,118.000000007451,0.233
11/3/2016 2:14:00 PM,119.000000000233,0.235
11/3/2016 2:16:00 PM,121.000000006752,0.236
11/3/2016 2:17:00 PM,121.999999999534,0.267
11/3/2016 2:19:00 PM,124.000000006054,0.239
11/3/2016 2:20:00 PM,124.999999998836,0.245
11/3/2016 2:21:00 PM,126.000000002095,0.238
11/3/2016 2:23:00 PM,128.000000008615,0.241
11/3/2016 2:24:00 PM,129.000000001397,0.235
11/3/2016 2:26:00 PM,131.000000007916,0.233
11/3/2016 2:27:00 PM,132.000000000698,0.242
11/3/2016 2:29:00 PM,134.000000007218,0.278
11/3/2016 2:30:00 PM,135,0.242
11/3/2016 2:32:00 PM,137.000000006519,0.248
11/3/2016 2:33:00 PM,137.999999999302,0.267
11/3/2016 2:34:00 PM,139.000000002561,0.255
11/3/2016 2:36:00 PM,140.999999998603,0.27
11/3/2016 2:37:00 PM,142.000000001863,0.248
11/3/2016 2:39:00 PM,144.000000008382,0.253
11/3/2016 2:40:00 PM,145.000000001164,0.246
11/3/2016 2:42:00 PM,147.000000007683,0.237
11/3/2016 2:43:00 PM,148.000000000466,0.257
11/3/2016 2:45:00 PM,150.000000006985,0.262
11/3/2016 2:46:00 PM,150.999999999767,0.284
11/3/2016 2:47:00 PM,152.000000003027,0.271
11/3/2016 2:49:00 PM,153.999999999069,0.279
11/3/2016 2:50:00 PM,155.000000002328,0.291
11/3/2016 2:52:00 PM,156.99999999837,0.255
11/3/2016 2:53:00 PM,158.00000000163,0.277
11/3/2016 2:55:00 PM,160.000000008149,0.305
11/3/2016 2:56:00 PM,161.000000000931,0.298
11/3/2016 2:57:00 PM,162.000000004191,0.318
11/3/2016 2:59:00 PM,164.000000000233,0.283
11/3/2016 3:00:00 PM,165.000000003492,0.291
11/3/2016 3:02:00 PM,166.999999999534,0.284
11/3/2016 3:03:00 PM,168.000000002794,0.302
11/3/2016 3:05:00 PM,169.999999998836,0.036
11/3/2016 3:06:00 PM,171.000000002095,0.038
11/3/2016 3:08:00 PM,173.000000008615,0.282
11/3/2016 3:09:00 PM,174.000000001397,0.295
11/3/2016 3:10:00 PM,175.000000004657,0.291
11/3/2016 3:12:00 PM,177.000000000698,0.292
11/3/2016 3:13:00 PM,178.000000003958,0.313
11/3/2016 3:15:00 PM,180,0.269
11/3/2016 3:16:00 PM,181.00000000326,0.276
11/3/2016 3:18:00 PM,182.999999999302,0.281
11/3/2016 3:19:00 PM,184.000000002561,0.299
11/3/2016 3:21:00 PM,185.999999998603,0.288
11/3/2016 3:22:00 PM,187.000000001863,0.71
11/3/2016 3:23:00 PM,188.000000005122,0.726
11/3/2016 3:25:00 PM,190.000000001164,0.303
11/3/2016 3:26:00 PM,191.000000004424,0.291
11/3/2016 3:28:00 PM,193.000000000466,0.296
11/3/2016 3:29:00 PM,194.000000003725,0.301
11/3/2016 3:31:00 PM,195.999999999767,0.134
11/3/2016 3:32:00 PM,197.000000003027,0.127
11/3/2016 3:34:00 PM,198.999999999069,0.304
11/3/2016 3:35:00 PM,200.000000002328,0.296
11/3/2016 3:36:00 PM,201.000000005588,0.308
11/3/2016 3:38:00 PM,203.00000000163,0.312
11/3/2016 3:39:00 PM,204.000000004889,0.703
11/3/2016 3:41:00 PM,206.000000000931,0.762
11/3/2016 3:42:00 PM,207.000000004191,0.312
11/3/2016 3:44:00 PM,209.000000000233,0.324
11/3/2016 3:45:00 PM,210.000000003492,0.319
11/3/2016 3:47:00 PM,211.999999999534,0.316
11/3/2016 3:48:00 PM,213.000000002794,0.138
11/3/2016 3:49:00 PM,214.000000006054,0.123
11/3/2016 3:51:00 PM,216.000000002095,0.31
11/3/2016 3:52:00 PM,217.000000005355,0.31
11/3/2016 3:54:00 PM,219.000000001397,0.298
11/3/2016 3:55:00 PM,220.000000004657,0.323
11/3/2016 3:57:00 PM,222.000000000698,0.33
11/3/2016 3:58:00 PM,223.000000003958,0.295
11/3/2016 3:59:00 PM,224.000000007218,0.322
11/3/2016 4:01:00 PM,226.00000000326,0.323
11/3/2016 4:02:00 PM,227.000000006519,0.332
11/3/2016 4:04:00 PM,229.000000002561,0.333
11/3/2016 4:05:00 PM,230.000000005821,0.313
11/3/2016 4:07:00 PM,232.000000001863,0.326
11/3/2016 4:08:00 PM,233.000000005122,0.331
11/3/2016 4:10:00 PM,235.000000001164,0.331
11/3/2016 4:11:00 PM,236.000000004424,0.338
11/3/2016 4:12:00 PM,237.000000007683,0.29
11/3/2016 4:14:00 PM,239.000000003725,0.318
11/3/2016 4:15:00 PM,240.000000006985,0.298
11/3/2016 4:17:00 PM,242.000000003027,0.298
11/3/2016 4:18:00 PM,243.000000006286,0.324
11/3/2016 4:20:00 PM,245.000000002328,0.319
11/3/2016 4:21:00 PM,246.000000005588,0.298
11/3/2016 4:23:00 PM,248.00000000163,0.33
11/3/2016 4:24:00 PM,249.000000004889,0.326
11/3/2016 4:25:00 PM,250.000000008149,0.319
11/3/2016 4:27:00 PM,252.000000004191,0.308
11/3/2016 4:28:00 PM,253.000000007451,0.319
11/3/2016 4:30:00 PM,255.000000003492,0.331
11/3/2016 4:31:00 PM,256.000000006752,0.791
11/3/2016 4:33:00 PM,258.000000002794,0.752
11/3/2016 4:34:00 PM,259.000000006054,0.312
11/3/2016 4:36:00 PM,261.000000002095,0.316
11/3/2016 4:37:00 PM,262.000000005355,0.331
11/3/2016 4:38:00 PM,263.000000008615,0.345
11/3/2016 4:40:00 PM,265.000000004657,0.335
11/3/2016 4:41:00 PM,266.000000007916,0.346
11/3/2016 4:43:00 PM,268.000000003958,0.339
11/3/2016 4:44:00 PM,269.000000007218,0.331
11/3/2016 4:46:00 PM,271.00000000326,0.32
11/3/2016 4:47:00 PM,272.000000006519,0.353
11/3/2016 4:48:00 PM,272.999999999302,0.134
11/3/2016 4:50:00 PM,275.000000005821,0.139
11/3/2016 4:51:00 PM,275.999999998603,0.336
11/3/2016 4:53:00 PM,278.000000005122,0.339
11/3/2016 4:54:00 PM,279.000000008382,0.315
11/3/2016 4:56:00 PM,281.000000004424,0.323
11/3/2016 4:57:00 PM,282.000000007683,0.409
11/3/2016 4:59:00 PM,284.000000003725,0.351
11/3/2016 5:00:00 PM,285.000000006985,0.355
11/3/2016 5:01:00 PM,285.999999999767,0.362
11/3/2016 5:03:00 PM,288.000000006286,0.353
11/3/2016 5:04:00 PM,288.999999999069,0.334
11/3/2016 5:06:00 PM,291.000000005588,0.35
11/3/2016 5:07:00 PM,291.99999999837,0.345
11/3/2016 5:09:00 PM,294.000000004889,0.358
11/3/2016 5:10:00 PM,295.000000008149,0.331
11/3/2016 5:12:00 PM,297.000000004191,0.373
11/3/2016 5:13:00 PM,298.000000007451,0.368
11/3/2016 5:14:00 PM,299.000000000233,0.341
11/3/2016 5:16:00 PM,301.000000006752,0.34
11/3/2016 5:17:00 PM,301.999999999534,0.389
11/3/2016 5:19:00 PM,304.000000006054,0.341
11/3/2016 5:20:00 PM,304.999999998836,0.317
11/3/2016 5:22:00 PM,307.000000005355,0.355
11/3/2016 5:23:00 PM,308.000000008615,0.315
11/3/2016 5:25:00 PM,310.000000004657,0.328
11/3/2016 5:26:00 PM,311.000000007916,0.332
11/3/2016 5:27:00 PM,312.000000000698,0.376
11/3/2016 5:29:00 PM,314.000000007218,0.378
11/3/2016 5:30:00 PM,315,0.364
11/3/2016 5:32:00 PM,317.000000006519,0.353
11/3/2016 5:33:00 PM,317.999999999302,0.354
11/3/2016 5:35:00 PM,320.000000005821,0.326
11/3/2016 5:36:00 PM,320.999999998603,0.363
11/3/2016 5:38:00 PM,323.000000005122,0.356
11/3/2016 5:39:00 PM,324.000000008382,0.322
11/3/2016 5:40:00 PM,325.000000001164,0.348
11/3/2016 5:42:00 PM,327.000000007683,0.341
11/3/2016 5:43:00 PM,328.000000000466,0.391
11/3/2016 5:45:00 PM,330.000000006985,0.359
11/3/2016 5:46:00 PM,330.999999999767,0.348
11/3/2016 5:48:00 PM,333.000000006286,0.387
11/3/2016 5:49:00 PM,333.999999999069,0.35
11/3/2016 5:50:00 PM,335.000000002328,0.36
11/3/2016 5:52:00 PM,336.99999999837,0.401
11/3/2016 5:53:00 PM,338.00000000163,0.369
11/3/2016 5:55:00 PM,340.000000008149,0.384
