---
instrument_id: '385'
data_file_original_name: 'EPA2275A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2864'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/332'
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 13:01:35'
dataset_updated_at: '2021-08-26 13:01:35'
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
11/9/2016 9:00:00 AM,-5.99999999860302,0.512
11/9/2016 9:02:00 AM,-4.00000000256114,0.441
11/9/2016 9:03:00 AM,-2.99999999930151,0
11/9/2016 9:05:00 AM,-1.00000000325963,0
11/9/2016 9:06:00 AM,0,0.511
11/9/2016 9:07:00 AM,1.00000000325963,0.101
11/9/2016 9:09:00 AM,2.99999999930151,0.044
11/9/2016 9:10:00 AM,4.00000000256114,0.012
11/9/2016 9:12:00 AM,5.99999999860302,0.039
11/9/2016 9:13:00 AM,7.00000000186265,0
11/9/2016 9:15:00 AM,8.99999999790452,0.012
11/9/2016 9:16:00 AM,10.0000000011642,0
11/9/2016 9:18:00 AM,11.999999997206,0
11/9/2016 9:19:00 AM,13.0000000004657,0.954
11/9/2016 9:20:00 AM,14.0000000037253,0
11/9/2016 9:22:00 AM,15.9999999997672,0
11/9/2016 9:23:00 AM,17.0000000030268,0.476
11/9/2016 9:25:00 AM,18.9999999990687,0.097
11/9/2016 9:26:00 AM,20.0000000023283,0.017
11/9/2016 9:28:00 AM,21.9999999983702,0.056
11/9/2016 9:29:00 AM,23.0000000016298,0.459
11/9/2016 9:30:00 AM,24.0000000048894,0.012
11/9/2016 9:32:00 AM,26.0000000009313,0.019
11/9/2016 9:33:00 AM,27.000000004191,0.954
11/9/2016 9:35:00 AM,29.0000000002328,0.258
11/9/2016 9:36:00 AM,30.0000000034925,0
11/9/2016 9:38:00 AM,31.9999999995343,1.033
11/9/2016 9:39:00 AM,33.000000002794,0
11/9/2016 9:41:00 AM,34.9999999988358,0.51
11/9/2016 9:42:00 AM,36.0000000020955,1.307
11/9/2016 9:43:00 AM,37.0000000053551,0
11/9/2016 9:45:00 AM,39.000000001397,0
11/9/2016 9:46:00 AM,40.0000000046566,0.213
11/9/2016 9:48:00 AM,42.0000000006985,0.219
11/9/2016 9:49:00 AM,43.0000000039581,0.273
11/9/2016 9:51:00 AM,45,0.054
11/9/2016 9:52:00 AM,46.0000000032596,0.156
11/9/2016 9:54:00 AM,47.9999999993015,0.166
11/9/2016 9:55:00 AM,49.0000000025611,0.171
11/9/2016 9:56:00 AM,50.0000000058208,0.172
11/9/2016 9:58:00 AM,52.0000000018626,0.18
11/9/2016 9:59:00 AM,53.0000000051223,0.176
11/9/2016 10:01:00 AM,55.0000000011642,0.184
11/9/2016 10:02:00 AM,56.0000000044238,0.188
11/9/2016 10:04:00 AM,58.0000000004657,0.186
11/9/2016 10:05:00 AM,59.0000000037253,0.18
11/9/2016 10:07:00 AM,60.9999999997672,0.191
11/9/2016 10:08:00 AM,62.0000000030268,0.193
11/9/2016 10:09:00 AM,63.0000000062864,0.193
11/9/2016 10:11:00 AM,65.0000000023283,0.2
11/9/2016 10:12:00 AM,66.0000000055879,0.202
11/9/2016 10:14:00 AM,68.0000000016298,0.197
11/9/2016 10:15:00 AM,69.0000000048894,0.208
11/9/2016 10:17:00 AM,71.0000000009313,0.084
11/9/2016 10:18:00 AM,72.000000004191,0.086
11/9/2016 10:19:00 AM,72.9999999969732,0.223
11/9/2016 10:21:00 AM,75.0000000034925,0.208
11/9/2016 10:22:00 AM,75.9999999962747,0.214
11/9/2016 10:24:00 AM,78.000000002794,0.23
11/9/2016 10:25:00 AM,79.0000000060536,0.218
11/9/2016 10:27:00 AM,81.0000000020955,0.211
11/9/2016 10:28:00 AM,82.0000000053551,0.217
11/9/2016 10:30:00 AM,84.000000001397,0.23
11/9/2016 10:31:00 AM,85.0000000046566,0.224
11/9/2016 10:32:00 AM,85.9999999974389,0.231
11/9/2016 10:34:00 AM,88.0000000039581,0.23
11/9/2016 10:35:00 AM,88.9999999967404,0.234
11/9/2016 10:37:00 AM,91.0000000032596,0.24
11/9/2016 10:38:00 AM,92.0000000065193,0.231
11/9/2016 10:40:00 AM,94.0000000025611,0.226
11/9/2016 10:41:00 AM,95.0000000058208,0.232
11/9/2016 10:43:00 AM,97.0000000018626,0.225
11/9/2016 10:44:00 AM,98.0000000051223,0.249
11/9/2016 10:45:00 AM,98.9999999979045,0.239
11/9/2016 10:47:00 AM,101.000000004424,0.232
11/9/2016 10:48:00 AM,101.999999997206,0.238
11/9/2016 10:50:00 AM,104.000000003725,0.235
11/9/2016 10:51:00 AM,104.999999996508,0.237
11/9/2016 10:53:00 AM,107.000000003027,0.229
11/9/2016 10:54:00 AM,108.000000006286,0.236
11/9/2016 10:56:00 AM,110.000000002328,0.241
11/9/2016 10:57:00 AM,111.000000005588,0.237
11/9/2016 10:58:00 AM,111.99999999837,0.243
11/9/2016 11:00:00 AM,114.000000004889,0.125
11/9/2016 11:01:00 AM,114.999999997672,0.129
11/9/2016 11:03:00 AM,117.000000004191,0.253
11/9/2016 11:04:00 AM,117.999999996973,0.246
11/9/2016 11:06:00 AM,120.000000003492,0.262
11/9/2016 11:07:00 AM,120.999999996275,0.262
11/9/2016 11:09:00 AM,123.000000002794,0.233
11/9/2016 11:10:00 AM,124.000000006054,0.244
11/9/2016 11:11:00 AM,124.999999998836,0.261
11/9/2016 11:13:00 AM,127.000000005355,0.242
11/9/2016 11:14:00 AM,127.999999998137,0.245
11/9/2016 11:16:00 AM,130.000000004657,0.263
11/9/2016 11:17:00 AM,130.999999997439,0.254
11/9/2016 11:19:00 AM,133.000000003958,0.254
11/9/2016 11:20:00 AM,133.99999999674,0.244
11/9/2016 11:21:00 AM,135,0.252
11/9/2016 11:23:00 AM,137.000000006519,0.267
11/9/2016 11:24:00 AM,137.999999999302,0.264
11/9/2016 11:26:00 AM,140.000000005821,0.513
11/9/2016 11:27:00 AM,140.999999998603,0.47
11/9/2016 11:29:00 AM,143.000000005122,0.255
11/9/2016 11:30:00 AM,143.999999997905,0.255
11/9/2016 11:32:00 AM,146.000000004424,0.249
11/9/2016 11:33:00 AM,146.999999997206,0.258
11/9/2016 11:34:00 AM,148.000000000466,0.252
11/9/2016 11:36:00 AM,149.999999996508,0.253
11/9/2016 11:37:00 AM,150.999999999767,0.263
11/9/2016 11:39:00 AM,153.000000006286,0.272
11/9/2016 11:40:00 AM,153.999999999069,0.244
11/9/2016 11:42:00 AM,156.000000005588,0.259
11/9/2016 11:43:00 AM,156.99999999837,0.131
11/9/2016 11:45:00 AM,159.000000004889,0.131
11/9/2016 11:46:00 AM,159.999999997672,0.259
11/9/2016 11:47:00 AM,161.000000000931,0.283
11/9/2016 11:49:00 AM,162.999999996973,0.272
11/9/2016 11:50:00 AM,164.000000000233,0.28
11/9/2016 11:52:00 AM,165.999999996275,0.256
11/9/2016 11:53:00 AM,166.999999999534,0.276
11/9/2016 11:55:00 AM,169.000000006054,0.28
11/9/2016 11:56:00 AM,169.999999998836,0.259
11/9/2016 11:58:00 AM,172.000000005355,0.277
11/9/2016 11:59:00 AM,172.999999998137,0.265
11/9/2016 12:00:00 PM,174.000000001397,0.265
11/9/2016 12:02:00 PM,175.999999997439,0.278
11/9/2016 12:03:00 PM,177.000000000698,0.256
11/9/2016 12:05:00 PM,178.99999999674,0.272
11/9/2016 12:06:00 PM,180,0.268
11/9/2016 12:08:00 PM,182.000000006519,0.271
11/9/2016 12:09:00 PM,182.999999999302,0.153
11/9/2016 12:11:00 PM,185.000000005821,0.162
11/9/2016 12:12:00 PM,185.999999998603,0.272
11/9/2016 12:13:00 PM,187.000000001863,0.273
11/9/2016 12:15:00 PM,188.999999997905,0.185
11/9/2016 12:16:00 PM,190.000000001164,0.291
