---
instrument_id: '385'
data_file_original_name: 'EPA2269A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2435'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/281'
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 16:06:59'
dataset_updated_at: '2021-08-24 16:06:59'
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
10/26/2016 9:48:00 AM,-23.0000000016298,0
10/26/2016 9:50:00 AM,-21.0000000055879,0
10/26/2016 9:51:00 AM,-20.0000000023283,0
10/26/2016 9:53:00 AM,-17.999999995809,0
10/26/2016 9:54:00 AM,-17.0000000030268,0
10/26/2016 9:56:00 AM,-14.9999999965075,0
10/26/2016 9:57:00 AM,-14.0000000037253,0
10/26/2016 9:58:00 AM,-13.0000000004657,0
10/26/2016 10:00:00 AM,-11.0000000044238,0
10/26/2016 10:01:00 AM,-10.0000000011642,0
10/26/2016 10:03:00 AM,-8.00000000512227,0
10/26/2016 10:04:00 AM,-7.00000000186265,0
10/26/2016 10:06:00 AM,-5.00000000582077,0
10/26/2016 10:07:00 AM,-4.00000000256114,0
10/26/2016 10:09:00 AM,-1.99999999604188,0
10/26/2016 10:10:00 AM,-1.00000000325963,0
10/26/2016 10:11:00 AM,0,0
10/26/2016 10:13:00 AM,1.99999999604188,0
10/26/2016 10:14:00 AM,2.99999999930151,0
10/26/2016 10:16:00 AM,4.99999999534339,0
10/26/2016 10:17:00 AM,5.99999999860302,0
10/26/2016 10:19:00 AM,7.9999999946449,0
10/26/2016 10:20:00 AM,8.99999999790452,0
10/26/2016 10:22:00 AM,10.9999999939464,0
10/26/2016 10:23:00 AM,11.999999997206,0
10/26/2016 10:24:00 AM,13.0000000004657,0
10/26/2016 10:26:00 AM,14.9999999965075,0
10/26/2016 10:27:00 AM,15.9999999997672,0
10/26/2016 10:29:00 AM,17.999999995809,0
10/26/2016 10:30:00 AM,18.9999999990687,0
10/26/2016 10:32:00 AM,20.9999999951106,0
10/26/2016 10:33:00 AM,21.9999999983702,0
10/26/2016 10:34:00 AM,23.0000000016298,0
10/26/2016 10:36:00 AM,24.9999999976717,0
10/26/2016 10:37:00 AM,26.0000000009313,0
10/26/2016 10:39:00 AM,27.9999999969732,0
10/26/2016 10:40:00 AM,29.0000000002328,0
10/26/2016 10:42:00 AM,30.9999999962747,0
10/26/2016 10:43:00 AM,31.9999999995343,0
10/26/2016 10:44:00 AM,33.000000002794,0
10/26/2016 10:46:00 AM,34.9999999988358,0
10/26/2016 10:47:00 AM,36.0000000020955,0
10/26/2016 10:49:00 AM,37.9999999981374,0
10/26/2016 10:50:00 AM,39.000000001397,0
10/26/2016 10:52:00 AM,40.9999999974389,0
10/26/2016 10:53:00 AM,42.0000000006985,0
10/26/2016 10:55:00 AM,43.9999999967404,0
10/26/2016 10:56:00 AM,45,0
10/26/2016 10:57:00 AM,46.0000000032596,0
10/26/2016 10:59:00 AM,47.9999999993015,0
10/26/2016 11:00:00 AM,49.0000000025611,0
10/26/2016 11:02:00 AM,50.999999998603,0
10/26/2016 11:03:00 AM,52.0000000018626,0
10/26/2016 11:05:00 AM,53.9999999979045,0
10/26/2016 11:06:00 AM,55.0000000011642,0
10/26/2016 11:08:00 AM,56.999999997206,0
10/26/2016 11:09:00 AM,58.0000000004657,0
10/26/2016 11:10:00 AM,59.0000000037253,0
10/26/2016 11:12:00 AM,60.9999999997672,0
10/26/2016 11:13:00 AM,62.0000000030268,0
10/26/2016 11:15:00 AM,63.9999999990687,0
10/26/2016 11:16:00 AM,65.0000000023283,0
10/26/2016 11:18:00 AM,66.9999999983702,0
10/26/2016 11:19:00 AM,68.0000000016298,0
10/26/2016 11:20:00 AM,68.9999999944121,0
10/26/2016 11:22:00 AM,71.0000000009313,0
10/26/2016 11:23:00 AM,72.000000004191,0
10/26/2016 11:25:00 AM,74.0000000002328,0
10/26/2016 11:26:00 AM,75.0000000034925,0.04
10/26/2016 11:28:00 AM,76.9999999995343,0.21
10/26/2016 11:29:00 AM,78.000000002794,0.206
10/26/2016 11:31:00 AM,79.9999999988358,0.21
10/26/2016 11:32:00 AM,81.0000000020955,0.216
10/26/2016 11:33:00 AM,81.9999999948777,0.229
10/26/2016 11:35:00 AM,84.000000001397,0.223
10/26/2016 11:36:00 AM,84.9999999941792,0.235
10/26/2016 11:38:00 AM,87.0000000006985,0.216
10/26/2016 11:39:00 AM,88.0000000039581,0.237
10/26/2016 11:41:00 AM,90,0.228
10/26/2016 11:42:00 AM,91.0000000032596,0.229
10/26/2016 11:44:00 AM,92.9999999993015,0.236
10/26/2016 11:45:00 AM,94.0000000025611,0.221
10/26/2016 11:46:00 AM,94.9999999953434,0.223
10/26/2016 11:48:00 AM,97.0000000018626,0.24
10/26/2016 11:49:00 AM,97.9999999946449,0.242
10/26/2016 11:51:00 AM,100.000000001164,0.242
10/26/2016 11:52:00 AM,100.999999993946,0.254
10/26/2016 11:54:00 AM,103.000000000466,0.238
10/26/2016 11:55:00 AM,104.000000003725,0.226
10/26/2016 11:57:00 AM,105.999999999767,0.216
10/26/2016 11:58:00 AM,107.000000003027,0.247
10/26/2016 11:59:00 AM,107.999999995809,0.24
10/26/2016 12:01:00 PM,110.000000002328,0.244
10/26/2016 12:02:00 PM,110.999999995111,0.235
10/26/2016 12:04:00 PM,113.00000000163,0.25
10/26/2016 12:05:00 PM,113.999999994412,0.238
10/26/2016 12:07:00 PM,116.000000000931,0.246
10/26/2016 12:08:00 PM,117.000000004191,0.256
10/26/2016 12:10:00 PM,119.000000000233,0.248
10/26/2016 12:11:00 PM,120.000000003492,0.244
10/26/2016 12:12:00 PM,120.999999996275,0.248
10/26/2016 12:14:00 PM,123.000000002794,0.125
10/26/2016 12:15:00 PM,123.999999995576,0.117
10/26/2016 12:17:00 PM,126.000000002095,0.239
10/26/2016 12:18:00 PM,126.999999994878,0.247
10/26/2016 12:20:00 PM,129.000000001397,0.249
10/26/2016 12:21:00 PM,129.999999994179,0.254
10/26/2016 12:22:00 PM,130.999999997439,0.538
10/26/2016 12:24:00 PM,133.000000003958,0.47
10/26/2016 12:25:00 PM,133.99999999674,0.239
10/26/2016 12:27:00 PM,136.00000000326,0.25
10/26/2016 12:28:00 PM,136.999999996042,0.245
10/26/2016 12:30:00 PM,139.000000002561,0.258
10/26/2016 12:31:00 PM,139.999999995343,0.128
10/26/2016 12:33:00 PM,142.000000001863,0.13
10/26/2016 12:34:00 PM,142.999999994645,0.258
10/26/2016 12:35:00 PM,143.999999997905,0.235
10/26/2016 12:37:00 PM,145.999999993946,0.267
10/26/2016 12:38:00 PM,146.999999997206,0.265
10/26/2016 12:40:00 PM,149.000000003725,0.508
10/26/2016 12:41:00 PM,149.999999996508,0.465
10/26/2016 12:43:00 PM,152.000000003027,0.255
10/26/2016 12:44:00 PM,152.999999995809,0.253
10/26/2016 12:46:00 PM,155.000000002328,0.262
10/26/2016 12:47:00 PM,155.999999995111,0.252
10/26/2016 12:48:00 PM,156.99999999837,0.142
10/26/2016 12:50:00 PM,158.999999994412,0.131
10/26/2016 12:51:00 PM,159.999999997672,0.285
10/26/2016 12:53:00 PM,162.000000004191,0.281
10/26/2016 12:54:00 PM,162.999999996973,0.263
10/26/2016 12:56:00 PM,165.000000003492,0.273
10/26/2016 12:57:00 PM,165.999999996275,0.275
10/26/2016 12:59:00 PM,168.000000002794,0.267
10/26/2016 1:00:00 PM,168.999999995576,0.27
10/26/2016 1:01:00 PM,169.999999998836,0.261
10/26/2016 1:03:00 PM,171.999999994878,0.259
10/26/2016 1:04:00 PM,172.999999998137,0.276
10/26/2016 1:06:00 PM,174.999999994179,0.284
10/26/2016 1:07:00 PM,175.999999997439,0.276
10/26/2016 1:09:00 PM,178.000000003958,0.269
10/26/2016 1:10:00 PM,178.99999999674,0.262
10/26/2016 1:12:00 PM,181.00000000326,0.264
10/26/2016 1:13:00 PM,181.999999996042,0.287
10/26/2016 1:14:00 PM,182.999999999302,0.271
10/26/2016 1:16:00 PM,184.999999995343,0.281
10/26/2016 1:17:00 PM,185.999999998603,0.28
10/26/2016 1:19:00 PM,187.999999994645,0.284
10/26/2016 1:20:00 PM,188.999999997905,0.272
10/26/2016 1:22:00 PM,190.999999993946,0.265
10/26/2016 1:23:00 PM,191.999999997206,0.28
10/26/2016 1:25:00 PM,194.000000003725,0.259
10/26/2016 1:26:00 PM,194.999999996508,0.268
10/26/2016 1:27:00 PM,195.999999999767,0.28
10/26/2016 1:29:00 PM,197.999999995809,0.279
10/26/2016 1:30:00 PM,198.999999999069,0.078
10/26/2016 1:32:00 PM,200.999999995111,0.292
10/26/2016 1:33:00 PM,201.99999999837,0.299
10/26/2016 1:35:00 PM,203.999999994412,0.268
10/26/2016 1:36:00 PM,204.999999997672,0.27
10/26/2016 1:37:00 PM,206.000000000931,0.278
10/26/2016 1:39:00 PM,207.999999996973,0.297
10/26/2016 1:40:00 PM,209.000000000233,0.273
10/26/2016 1:42:00 PM,210.999999996275,0.284
10/26/2016 1:43:00 PM,211.999999999534,0.281
10/26/2016 1:45:00 PM,213.999999995576,0.275
10/26/2016 1:46:00 PM,214.999999998836,0.287
10/26/2016 1:48:00 PM,216.999999994878,0.28
10/26/2016 1:49:00 PM,217.999999998137,0.282
10/26/2016 1:50:00 PM,219.000000001397,0.275
10/26/2016 1:52:00 PM,220.999999997439,0.29
10/26/2016 1:53:00 PM,222.000000000698,0.282
10/26/2016 1:55:00 PM,223.99999999674,0.281
10/26/2016 1:56:00 PM,225,0.285
10/26/2016 1:58:00 PM,226.999999996042,0.28
10/26/2016 1:59:00 PM,227.999999999302,0.28
10/26/2016 2:01:00 PM,229.999999995343,0.283
10/26/2016 2:02:00 PM,230.999999998603,0.276
10/26/2016 2:03:00 PM,232.000000001863,0.27
10/26/2016 2:05:00 PM,233.999999997905,0.286
10/26/2016 2:06:00 PM,235.000000001164,0.293
10/26/2016 2:08:00 PM,236.999999997206,0.275
10/26/2016 2:09:00 PM,238.000000000466,0.266
10/26/2016 2:11:00 PM,239.999999996508,0.28
10/26/2016 2:12:00 PM,240.999999999767,0.294
10/26/2016 2:14:00 PM,242.999999995809,0.284
10/26/2016 2:15:00 PM,243.999999999069,0.288
10/26/2016 2:16:00 PM,245.000000002328,0.27
10/26/2016 2:18:00 PM,246.99999999837,0.284
10/26/2016 2:19:00 PM,248.00000000163,0.279
10/26/2016 2:21:00 PM,249.999999997672,0.278
10/26/2016 2:22:00 PM,251.000000000931,0.284
10/26/2016 2:24:00 PM,252.999999996973,0.158
10/26/2016 2:25:00 PM,254.000000000233,0.17
10/26/2016 2:26:00 PM,255.000000003492,0.295
10/26/2016 2:28:00 PM,256.999999999534,0.287
10/26/2016 2:29:00 PM,258.000000002794,0.282
10/26/2016 2:31:00 PM,259.999999998836,0.279
10/26/2016 2:32:00 PM,261.000000002095,0.295
10/26/2016 2:34:00 PM,262.999999998137,0.302
10/26/2016 2:35:00 PM,264.000000001397,0.301
10/26/2016 2:37:00 PM,265.999999997439,0.3
10/26/2016 2:38:00 PM,267.000000000698,0.282
10/26/2016 2:39:00 PM,268.000000003958,0.298
10/26/2016 2:41:00 PM,270,0.316
10/26/2016 2:42:00 PM,271.00000000326,0.297
10/26/2016 2:44:00 PM,272.999999999302,0.274
10/26/2016 2:45:00 PM,274.000000002561,0.287
10/26/2016 2:47:00 PM,275.999999998603,0.28
10/26/2016 2:48:00 PM,277.000000001863,0.282
10/26/2016 2:50:00 PM,278.999999997905,0.273
10/26/2016 2:51:00 PM,280.000000001164,0.287
10/26/2016 2:52:00 PM,280.999999993946,0.304
10/26/2016 2:54:00 PM,283.000000000466,0.299
10/26/2016 2:55:00 PM,284.000000003725,0.286
10/26/2016 2:57:00 PM,285.999999999767,0.297
10/26/2016 2:58:00 PM,287.000000003027,0.286
10/26/2016 3:00:00 PM,288.999999999069,0.29
10/26/2016 3:01:00 PM,290.000000002328,0.291
10/26/2016 3:03:00 PM,291.99999999837,0.301
10/26/2016 3:04:00 PM,293.00000000163,0.28
10/26/2016 3:05:00 PM,293.999999994412,0.292
10/26/2016 3:07:00 PM,296.000000000931,0.297
10/26/2016 3:08:00 PM,297.000000004191,0.306
10/26/2016 3:10:00 PM,299.000000000233,0.296
10/26/2016 3:11:00 PM,300.000000003492,0.299
10/26/2016 3:13:00 PM,301.999999999534,0.285
10/26/2016 3:14:00 PM,303.000000002794,0.292
10/26/2016 3:16:00 PM,304.999999998836,0.171
10/26/2016 3:17:00 PM,306.000000002095,0.181
10/26/2016 3:18:00 PM,306.999999994878,0.272
10/26/2016 3:20:00 PM,309.000000001397,0.288
10/26/2016 3:21:00 PM,309.999999994179,0.284
10/26/2016 3:23:00 PM,312.000000000698,0.26
10/26/2016 3:24:00 PM,313.000000003958,0.312
10/26/2016 3:26:00 PM,315,0.268
10/26/2016 3:27:00 PM,316.00000000326,0.287
10/26/2016 3:28:00 PM,316.999999996042,0.284
10/26/2016 3:30:00 PM,319.000000002561,0.328
10/26/2016 3:31:00 PM,319.999999995343,0.297
10/26/2016 3:33:00 PM,322.000000001863,0.515
10/26/2016 3:34:00 PM,322.999999994645,0.362
10/26/2016 3:36:00 PM,325.000000001164,0.283
10/26/2016 3:37:00 PM,325.999999993946,0.311
10/26/2016 3:39:00 PM,328.000000000466,0.303
10/26/2016 3:40:00 PM,329.000000003725,0.301
10/26/2016 3:41:00 PM,329.999999996508,0.184
10/26/2016 3:43:00 PM,332.000000003027,0.183
10/26/2016 3:44:00 PM,332.999999995809,0.286
10/26/2016 3:46:00 PM,335.000000002328,0.255
10/26/2016 3:47:00 PM,335.999999995111,0.273
10/26/2016 3:49:00 PM,338.00000000163,0.307
10/26/2016 3:50:00 PM,338.999999994412,0.3
10/26/2016 3:52:00 PM,341.000000000931,0.299
10/26/2016 3:53:00 PM,342.000000004191,0.3
10/26/2016 3:54:00 PM,342.999999996973,0.258
10/26/2016 3:56:00 PM,345.000000003492,0.272
10/26/2016 3:57:00 PM,345.999999996275,0.296
10/26/2016 3:59:00 PM,348.000000002794,0.301
10/26/2016 4:00:00 PM,348.999999995576,0.289
10/26/2016 4:02:00 PM,351.000000002095,0.295
10/26/2016 4:03:00 PM,351.999999994878,0.281
10/26/2016 4:05:00 PM,354.000000001397,0.292
10/26/2016 4:06:00 PM,354.999999994179,0.298
10/26/2016 4:07:00 PM,355.999999997439,0.488
10/26/2016 4:09:00 PM,358.000000003958,0.335
10/26/2016 4:10:00 PM,358.99999999674,0.319
10/26/2016 4:12:00 PM,361.00000000326,0.282
10/26/2016 4:13:00 PM,361.999999996042,0.279
10/26/2016 4:15:00 PM,364.000000002561,0.291
10/26/2016 4:16:00 PM,364.999999995343,0.195
10/26/2016 4:18:00 PM,367.000000001863,0.189
10/26/2016 4:19:00 PM,367.999999994645,0.316
10/26/2016 4:20:00 PM,368.999999997905,0.305
10/26/2016 4:22:00 PM,370.999999993946,0.292
10/26/2016 4:23:00 PM,371.999999997206,0.274
10/26/2016 4:25:00 PM,374.000000003725,0.499
10/26/2016 4:26:00 PM,374.999999996508,0.346
10/26/2016 4:28:00 PM,377.000000003027,0.281
10/26/2016 4:29:00 PM,377.999999995809,0.315
10/26/2016 4:30:00 PM,378.999999999069,0.276
10/26/2016 4:32:00 PM,380.999999995111,0.278
10/26/2016 4:33:00 PM,381.99999999837,0.282
10/26/2016 4:35:00 PM,383.999999994412,0.313
