---
instrument_id: '385'
data_file_original_name: 'EPA2262A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2811'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/256'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/539/experimentSets/189'
chamber_link: 'https://icarus.ucdavis.edu/chambers/539'
dataset_created_at: '2021-08-26 12:21:43'
dataset_updated_at: '2021-08-26 12:21:43'
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
10/11/2016 10:07:00 AM,-60.9999999997672,0
10/11/2016 10:09:00 AM,-58.9999999932479,0
10/11/2016 10:10:00 AM,-58.0000000004657,0
10/11/2016 10:11:00 AM,-56.999999997206,0
10/11/2016 10:13:00 AM,-55.0000000011642,0
10/11/2016 10:14:00 AM,-53.9999999979045,0
10/11/2016 10:16:00 AM,-52.0000000018626,0
10/11/2016 10:17:00 AM,-50.999999998603,0
10/11/2016 10:19:00 AM,-49.0000000025611,0
10/11/2016 10:20:00 AM,-47.9999999993015,0
10/11/2016 10:22:00 AM,-46.0000000032596,0
10/11/2016 10:23:00 AM,-45,0
10/11/2016 10:24:00 AM,-43.9999999967404,0
10/11/2016 10:26:00 AM,-42.0000000006985,0
10/11/2016 10:27:00 AM,-40.9999999974389,0
10/11/2016 10:29:00 AM,-39.000000001397,0
10/11/2016 10:30:00 AM,-37.9999999981374,0
10/11/2016 10:32:00 AM,-36.0000000020955,0
10/11/2016 10:33:00 AM,-34.9999999988358,0
10/11/2016 10:35:00 AM,-33.000000002794,0
10/11/2016 10:36:00 AM,-31.9999999995343,0
10/11/2016 10:37:00 AM,-30.9999999962747,0
10/11/2016 10:39:00 AM,-29.0000000002328,0
10/11/2016 10:40:00 AM,-27.9999999969732,0
10/11/2016 10:42:00 AM,-26.0000000009313,0
10/11/2016 10:43:00 AM,-24.9999999976717,0
10/11/2016 10:45:00 AM,-23.0000000016298,0
10/11/2016 10:46:00 AM,-21.9999999983702,0
10/11/2016 10:47:00 AM,-20.9999999951106,0
10/11/2016 10:49:00 AM,-18.9999999990687,0
10/11/2016 10:50:00 AM,-17.999999995809,0
10/11/2016 10:52:00 AM,-15.9999999997672,0
10/11/2016 10:53:00 AM,-14.9999999965075,0
10/11/2016 10:55:00 AM,-13.0000000004657,0
10/11/2016 10:56:00 AM,-11.999999997206,0
10/11/2016 10:58:00 AM,-10.0000000011642,0
10/11/2016 10:59:00 AM,-8.99999999790452,0
10/11/2016 11:00:00 AM,-7.9999999946449,0
10/11/2016 11:02:00 AM,-5.99999999860302,0
10/11/2016 11:03:00 AM,-4.99999999534339,0
10/11/2016 11:05:00 AM,-2.99999999930151,0
10/11/2016 11:06:00 AM,-1.99999999604188,0
10/11/2016 11:08:00 AM,0,0
10/11/2016 11:09:00 AM,1.00000000325963,0
10/11/2016 11:11:00 AM,2.99999999930151,0
10/11/2016 11:12:00 AM,4.00000000256114,0
10/11/2016 11:13:00 AM,5.00000000582077,0
10/11/2016 11:15:00 AM,7.00000000186265,0
10/11/2016 11:16:00 AM,8.00000000512227,0
10/11/2016 11:18:00 AM,10.0000000011642,0
10/11/2016 11:19:00 AM,11.0000000044238,0
10/11/2016 11:21:00 AM,13.0000000004657,0.067
10/11/2016 11:22:00 AM,14.0000000037253,0.084
10/11/2016 11:24:00 AM,15.9999999997672,0.503
10/11/2016 11:25:00 AM,17.0000000030268,0.52
10/11/2016 11:26:00 AM,18.0000000062864,0.118
10/11/2016 11:28:00 AM,20.0000000023283,0.119
10/11/2016 11:29:00 AM,21.0000000055879,0.132
10/11/2016 11:31:00 AM,23.0000000016298,0.144
10/11/2016 11:32:00 AM,24.0000000048894,0.061
10/11/2016 11:34:00 AM,26.0000000009313,0.063
10/11/2016 11:35:00 AM,27.000000004191,0.155
10/11/2016 11:36:00 AM,27.9999999969732,0.155
10/11/2016 11:38:00 AM,30.0000000034925,0.167
10/11/2016 11:39:00 AM,31.0000000067521,0.168
10/11/2016 11:41:00 AM,33.000000002794,0.169
10/11/2016 11:42:00 AM,34.0000000060536,0.179
10/11/2016 11:44:00 AM,36.0000000020955,0.18
10/11/2016 11:45:00 AM,37.0000000053551,0.185
10/11/2016 11:47:00 AM,39.000000001397,0.188
10/11/2016 11:48:00 AM,40.0000000046566,0.194
10/11/2016 11:49:00 AM,40.9999999974389,0.101
10/11/2016 11:51:00 AM,43.0000000039581,0.099
10/11/2016 11:52:00 AM,43.9999999967404,0.198
10/11/2016 11:54:00 AM,46.0000000032596,0.199
10/11/2016 11:55:00 AM,47.0000000065193,0.21
10/11/2016 11:57:00 AM,49.0000000025611,0.21
10/11/2016 11:58:00 AM,50.0000000058208,0.119
10/11/2016 12:00:00 PM,52.0000000018626,0.121
10/11/2016 12:01:00 PM,53.0000000051223,0.212
10/11/2016 12:02:00 PM,53.9999999979045,0.214
10/11/2016 12:04:00 PM,56.0000000044238,0.218
10/11/2016 12:05:00 PM,56.999999997206,0.224
10/11/2016 12:07:00 PM,59.0000000037253,0.217
10/11/2016 12:08:00 PM,60.0000000069849,0.223
10/11/2016 12:10:00 PM,62.0000000030268,0.229
10/11/2016 12:11:00 PM,63.0000000062864,0.23
10/11/2016 12:13:00 PM,65.0000000023283,0.23
10/11/2016 12:14:00 PM,66.0000000055879,0.234
10/11/2016 12:15:00 PM,66.9999999983702,0.233
10/11/2016 12:17:00 PM,69.0000000048894,0.006
10/11/2016 12:18:00 PM,69.9999999976717,0.235
10/11/2016 12:20:00 PM,72.000000004191,0.231
10/11/2016 12:21:00 PM,72.9999999969732,0.235
10/11/2016 12:23:00 PM,75.0000000034925,0.006
10/11/2016 12:24:00 PM,76.0000000067521,0.247
10/11/2016 12:26:00 PM,78.000000002794,0.24
10/11/2016 12:27:00 PM,79.0000000060536,0.243
10/11/2016 12:28:00 PM,79.9999999988358,0.254
10/11/2016 12:30:00 PM,82.0000000053551,0.248
10/11/2016 12:31:00 PM,82.9999999981374,0.252
10/11/2016 12:33:00 PM,85.0000000046566,0.159
10/11/2016 12:34:00 PM,85.9999999974389,0.177
10/11/2016 12:36:00 PM,88.0000000039581,0.265
10/11/2016 12:37:00 PM,88.9999999967404,0.263
10/11/2016 12:38:00 PM,90,0.266
10/11/2016 12:40:00 PM,92.0000000065193,0.267
10/11/2016 12:41:00 PM,92.9999999993015,0.261
10/11/2016 12:43:00 PM,95.0000000058208,0.273
10/11/2016 12:44:00 PM,95.999999998603,0.265
10/11/2016 12:46:00 PM,98.0000000051223,0.272
10/11/2016 12:47:00 PM,98.9999999979045,0.28
10/11/2016 12:49:00 PM,101.000000004424,0.27
10/11/2016 12:50:00 PM,101.999999997206,0.276
10/11/2016 12:51:00 PM,103.000000000466,0.277
10/11/2016 12:53:00 PM,105.000000006985,0.279
10/11/2016 12:54:00 PM,105.999999999767,0.273
10/11/2016 12:56:00 PM,108.000000006286,0.276
10/11/2016 12:57:00 PM,108.999999999069,0.28
10/11/2016 12:59:00 PM,111.000000005588,0.277
10/11/2016 1:00:00 PM,111.99999999837,0.277
10/11/2016 1:02:00 PM,114.000000004889,0.282
10/11/2016 1:03:00 PM,114.999999997672,0.282
10/11/2016 1:04:00 PM,116.000000000931,0.287
10/11/2016 1:06:00 PM,117.999999996973,0.283
10/11/2016 1:07:00 PM,119.000000000233,0.186
10/11/2016 1:09:00 PM,121.000000006752,0.218
10/11/2016 1:10:00 PM,121.999999999534,0.284
10/11/2016 1:12:00 PM,124.000000006054,0.289
10/11/2016 1:13:00 PM,124.999999998836,0.29
10/11/2016 1:15:00 PM,127.000000005355,0.294
10/11/2016 1:16:00 PM,127.999999998137,0.285
10/11/2016 1:17:00 PM,129.000000001397,0.294
10/11/2016 1:19:00 PM,130.999999997439,0.288
10/11/2016 1:20:00 PM,132.000000000698,0.289
10/11/2016 1:22:00 PM,133.99999999674,0.298
10/11/2016 1:23:00 PM,135,0.293
10/11/2016 1:25:00 PM,137.000000006519,0.305
10/11/2016 1:26:00 PM,137.999999999302,0.293
10/11/2016 1:27:00 PM,139.000000002561,0.294
10/11/2016 1:29:00 PM,140.999999998603,0.298
10/11/2016 1:30:00 PM,142.000000001863,0.299
10/11/2016 1:32:00 PM,143.999999997905,0.301
10/11/2016 1:33:00 PM,145.000000001164,0.296
10/11/2016 1:35:00 PM,146.999999997206,0.307
10/11/2016 1:36:00 PM,148.000000000466,0.305
10/11/2016 1:38:00 PM,150.000000006985,0.295
10/11/2016 1:39:00 PM,150.999999999767,0.309
10/11/2016 1:40:00 PM,152.000000003027,0.301
10/11/2016 1:42:00 PM,153.999999999069,0.298
10/11/2016 1:43:00 PM,155.000000002328,0.309
10/11/2016 1:45:00 PM,156.99999999837,0.3
10/11/2016 1:46:00 PM,158.00000000163,0.311
10/11/2016 1:48:00 PM,159.999999997672,0.303
10/11/2016 1:49:00 PM,161.000000000931,0.301
10/11/2016 1:51:00 PM,162.999999996973,0.31
10/11/2016 1:52:00 PM,164.000000000233,0.311
10/11/2016 1:53:00 PM,165.000000003492,0.31
10/11/2016 1:55:00 PM,166.999999999534,0.308
10/11/2016 1:56:00 PM,168.000000002794,0.302
10/11/2016 1:58:00 PM,169.999999998836,0.311
10/11/2016 1:59:00 PM,171.000000002095,0.223
10/11/2016 2:01:00 PM,172.999999998137,0.234
10/11/2016 2:02:00 PM,174.000000001397,0.313
10/11/2016 2:04:00 PM,175.999999997439,0.309
10/11/2016 2:05:00 PM,177.000000000698,0.313
10/11/2016 2:06:00 PM,178.000000003958,0.311
10/11/2016 2:08:00 PM,180,0.311
10/11/2016 2:09:00 PM,181.00000000326,0.323
10/11/2016 2:11:00 PM,182.999999999302,0.316
10/11/2016 2:12:00 PM,184.000000002561,0.322
10/11/2016 2:14:00 PM,185.999999998603,0.315
10/11/2016 2:15:00 PM,187.000000001863,0.316
10/11/2016 2:17:00 PM,188.999999997905,0.304
10/11/2016 2:18:00 PM,190.000000001164,0.31
10/11/2016 2:19:00 PM,191.000000004424,0.317
10/11/2016 2:21:00 PM,193.000000000466,0.322
10/11/2016 2:22:00 PM,194.000000003725,0.322
10/11/2016 2:24:00 PM,195.999999999767,0.318
10/11/2016 2:25:00 PM,197.000000003027,0.454
10/11/2016 2:27:00 PM,198.999999999069,0.37
10/11/2016 2:28:00 PM,200.000000002328,0.321
10/11/2016 2:29:00 PM,201.000000005588,0.311
10/11/2016 2:31:00 PM,203.00000000163,0.32
10/11/2016 2:32:00 PM,204.000000004889,0.314
10/11/2016 2:34:00 PM,206.000000000931,0.22
10/11/2016 2:35:00 PM,207.000000004191,0.254
10/11/2016 2:37:00 PM,209.000000000233,0.323
10/11/2016 2:38:00 PM,210.000000003492,0.315
10/11/2016 2:40:00 PM,211.999999999534,0.318
10/11/2016 2:41:00 PM,213.000000002794,0.333
10/11/2016 2:42:00 PM,214.000000006054,0.325
10/11/2016 2:44:00 PM,216.000000002095,0.32
10/11/2016 2:45:00 PM,217.000000005355,0.33
10/11/2016 2:47:00 PM,219.000000001397,0.315
10/11/2016 2:48:00 PM,220.000000004657,0.334
10/11/2016 2:50:00 PM,222.000000000698,0.33
10/11/2016 2:51:00 PM,223.000000003958,0.324
10/11/2016 2:53:00 PM,225,0.316
10/11/2016 2:54:00 PM,226.00000000326,0.32
10/11/2016 2:55:00 PM,227.000000006519,0.315
10/11/2016 2:57:00 PM,229.000000002561,0.33
10/11/2016 2:58:00 PM,230.000000005821,0.326
10/11/2016 3:00:00 PM,232.000000001863,0.331
10/11/2016 3:01:00 PM,233.000000005122,0.323
10/11/2016 3:03:00 PM,235.000000001164,0.32
10/11/2016 3:04:00 PM,236.000000004424,0.322
10/11/2016 3:06:00 PM,238.000000000466,0.334
10/11/2016 3:07:00 PM,239.000000003725,0.331
10/11/2016 3:08:00 PM,240.000000006985,0.321
10/11/2016 3:10:00 PM,242.000000003027,0.313
10/11/2016 3:11:00 PM,243.000000006286,0.331
10/11/2016 3:13:00 PM,245.000000002328,0.336
10/11/2016 3:14:00 PM,246.000000005588,0.328
10/11/2016 3:16:00 PM,248.00000000163,0.325
10/11/2016 3:17:00 PM,249.000000004889,0.325
10/11/2016 3:19:00 PM,251.000000000931,0.32
10/11/2016 3:20:00 PM,252.000000004191,0.318
10/11/2016 3:21:00 PM,252.999999996973,0.326
10/11/2016 3:23:00 PM,255.000000003492,0.33
10/11/2016 3:24:00 PM,256.000000006752,0.334
10/11/2016 3:26:00 PM,258.000000002794,0.243
10/11/2016 3:27:00 PM,259.000000006054,0.265
10/11/2016 3:29:00 PM,261.000000002095,0.329
10/11/2016 3:30:00 PM,262.000000005355,0.341
10/11/2016 3:31:00 PM,262.999999998137,0.338
10/11/2016 3:33:00 PM,265.000000004657,0.335
10/11/2016 3:34:00 PM,265.999999997439,0.334
10/11/2016 3:36:00 PM,268.000000003958,0.331
10/11/2016 3:37:00 PM,268.99999999674,0.328
10/11/2016 3:39:00 PM,271.00000000326,0.334
10/11/2016 3:40:00 PM,272.000000006519,0.34
10/11/2016 3:42:00 PM,274.000000002561,0.329
10/11/2016 3:43:00 PM,275.000000005821,0.332
10/11/2016 3:44:00 PM,275.999999998603,0.333
10/11/2016 3:46:00 PM,278.000000005122,0.316
10/11/2016 3:47:00 PM,278.999999997905,0.324
10/11/2016 3:49:00 PM,281.000000004424,0.326
10/11/2016 3:50:00 PM,281.999999997206,0.326
10/11/2016 3:52:00 PM,284.000000003725,0.461
10/11/2016 3:53:00 PM,285.000000006985,0.374
10/11/2016 3:55:00 PM,287.000000003027,0.331
10/11/2016 3:56:00 PM,288.000000006286,0.326
10/11/2016 3:57:00 PM,288.999999999069,0.326
10/11/2016 3:59:00 PM,291.000000005588,0.332
10/11/2016 4:00:00 PM,291.99999999837,0.227
10/11/2016 4:02:00 PM,294.000000004889,0.271
10/11/2016 4:03:00 PM,294.999999997672,0.327
10/11/2016 4:05:00 PM,297.000000004191,0.339
10/11/2016 4:06:00 PM,297.999999996973,0.33
10/11/2016 4:08:00 PM,300.000000003492,0.33
10/11/2016 4:09:00 PM,301.000000006752,0.33
10/11/2016 4:10:00 PM,301.999999999534,0.347
10/11/2016 4:12:00 PM,304.000000006054,0.347
10/11/2016 4:13:00 PM,304.999999998836,0.354
10/11/2016 4:15:00 PM,307.000000005355,0.336
10/11/2016 4:16:00 PM,307.999999998137,0.313
10/11/2016 4:18:00 PM,310.000000004657,0.322
10/11/2016 4:19:00 PM,310.999999997439,0.322
10/11/2016 4:21:00 PM,313.000000003958,0.333
10/11/2016 4:22:00 PM,313.99999999674,0.33
10/11/2016 4:23:00 PM,315,0.329
10/11/2016 4:25:00 PM,317.000000006519,0.325
10/11/2016 4:26:00 PM,317.999999999302,0.252
10/11/2016 4:28:00 PM,320.000000005821,0.278
10/11/2016 4:29:00 PM,320.999999998603,0.324
10/11/2016 4:31:00 PM,323.000000005122,0.333
10/11/2016 4:32:00 PM,323.999999997905,0.342
10/11/2016 4:33:00 PM,325.000000001164,0.331
10/11/2016 4:35:00 PM,326.999999997206,0.344
10/11/2016 4:36:00 PM,328.000000000466,0.334
10/11/2016 4:38:00 PM,330.000000006985,0.328
10/11/2016 4:39:00 PM,330.999999999767,0.345
10/11/2016 4:41:00 PM,333.000000006286,0.348
10/11/2016 4:42:00 PM,333.999999999069,0.339
10/11/2016 4:44:00 PM,336.000000005588,0.335
10/11/2016 4:45:00 PM,336.99999999837,0.339
10/11/2016 4:46:00 PM,338.00000000163,0.343
10/11/2016 4:48:00 PM,339.999999997672,0.337
10/11/2016 4:49:00 PM,341.000000000931,0.333
10/11/2016 4:51:00 PM,342.999999996973,0.334
10/11/2016 4:52:00 PM,344.000000000233,0.337
10/11/2016 4:54:00 PM,346.000000006752,0.326
10/11/2016 4:55:00 PM,346.999999999534,0.328
10/11/2016 4:57:00 PM,349.000000006054,0.345
10/11/2016 4:58:00 PM,349.999999998836,0.341
10/11/2016 4:59:00 PM,351.000000002095,0.329
10/11/2016 5:01:00 PM,352.999999998137,0.338
10/11/2016 5:02:00 PM,354.000000001397,0.338
10/11/2016 5:04:00 PM,355.999999997439,0.331
10/11/2016 5:05:00 PM,357.000000000698,0.334
10/11/2016 5:07:00 PM,358.99999999674,0.34
10/11/2016 5:08:00 PM,360,0.341
10/11/2016 5:10:00 PM,362.000000006519,0.333
10/11/2016 5:11:00 PM,362.999999999302,0.342
10/11/2016 5:12:00 PM,364.000000002561,0.329
10/11/2016 5:14:00 PM,365.999999998603,0.338
10/11/2016 5:15:00 PM,367.000000001863,0.333
10/11/2016 5:17:00 PM,368.999999997905,0.339
10/11/2016 5:18:00 PM,370.000000001164,0.342
10/11/2016 5:20:00 PM,371.999999997206,0.329
10/11/2016 5:21:00 PM,373.000000000466,0.329
10/11/2016 5:23:00 PM,375.000000006985,0.323
10/11/2016 5:24:00 PM,375.999999999767,0.341
10/11/2016 5:25:00 PM,377.000000003027,0.343
10/11/2016 5:27:00 PM,378.999999999069,0.342
10/11/2016 5:28:00 PM,380.000000002328,0.374
10/11/2016 5:30:00 PM,381.99999999837,0.337
10/11/2016 5:31:00 PM,383.00000000163,0.342
10/11/2016 5:33:00 PM,384.999999997672,0.304
10/11/2016 5:34:00 PM,386.000000000931,0.339
10/11/2016 5:35:00 PM,387.000000004191,0.336
10/11/2016 5:37:00 PM,389.000000000233,0.337
10/11/2016 5:38:00 PM,390.000000003492,0.333
10/11/2016 5:40:00 PM,391.999999999534,0.344
10/11/2016 5:41:00 PM,393.000000002794,0.339
