---
instrument_id: '385'
data_file_original_name: 'EPA2276A_VTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Volume_Fraction_Remaining_unitless'
dataset_id: '2876'
experiment_link: 'https://icarus.ucdavis.edu/chambers/539/experiments/334'
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 13:18:03'
dataset_updated_at: '2021-08-26 13:18:03'
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
11/10/2016 8:38:00 AM,5.99999999860302,0
11/10/2016 8:39:00 AM,7.00000000186265,0.858
11/10/2016 8:41:00 AM,8.99999999790452,0.307
11/10/2016 8:42:00 AM,10.0000000011642,1.398
11/10/2016 8:44:00 AM,11.999999997206,0.668
11/10/2016 8:45:00 AM,13.0000000004657,0
11/10/2016 8:47:00 AM,14.9999999965075,0.754
11/10/2016 8:48:00 AM,15.9999999997672,0
11/10/2016 8:49:00 AM,16.9999999925494,0.554
11/10/2016 8:51:00 AM,18.9999999990687,0.954
11/10/2016 8:52:00 AM,19.9999999918509,0
11/10/2016 8:54:00 AM,21.9999999983702,0
11/10/2016 8:55:00 AM,23.0000000016298,0.276
11/10/2016 8:57:00 AM,24.9999999976717,0.276
11/10/2016 8:58:00 AM,26.0000000009313,0
11/10/2016 8:59:00 AM,26.9999999937136,1.48
11/10/2016 9:01:00 AM,29.0000000002328,0.381
11/10/2016 9:02:00 AM,29.9999999930151,0.954
11/10/2016 9:04:00 AM,31.9999999995343,0
11/10/2016 9:05:00 AM,32.9999999923166,0
11/10/2016 9:07:00 AM,34.9999999988358,0
11/10/2016 9:08:00 AM,36.0000000020955,0
11/10/2016 9:10:00 AM,37.9999999981374,0.51
11/10/2016 9:11:00 AM,39.000000001397,0
11/10/2016 9:12:00 AM,39.9999999941792,0
11/10/2016 9:14:00 AM,42.0000000006985,0
11/10/2016 9:15:00 AM,42.9999999934807,0
11/10/2016 9:17:00 AM,45,0.212
11/10/2016 9:18:00 AM,45.9999999927823,1.177
11/10/2016 9:20:00 AM,47.9999999993015,0.29
11/10/2016 9:21:00 AM,48.9999999920838,0.225
11/10/2016 9:23:00 AM,50.999999998603,0.035
11/10/2016 9:24:00 AM,52.0000000018626,0.221
11/10/2016 9:25:00 AM,52.9999999946449,0.205
11/10/2016 9:27:00 AM,55.0000000011642,0.085
11/10/2016 9:28:00 AM,55.9999999939464,0.06
11/10/2016 9:30:00 AM,58.0000000004657,0.052
11/10/2016 9:31:00 AM,58.9999999932479,0.177
11/10/2016 9:33:00 AM,60.9999999997672,0.164
11/10/2016 9:34:00 AM,61.9999999925494,0.195
11/10/2016 9:36:00 AM,63.9999999990687,0.199
11/10/2016 9:37:00 AM,64.9999999918509,0.19
11/10/2016 9:38:00 AM,65.9999999951106,0.2
11/10/2016 9:40:00 AM,68.0000000016298,0.212
11/10/2016 9:41:00 AM,68.9999999944121,0.199
11/10/2016 9:43:00 AM,71.0000000009313,0.216
11/10/2016 9:44:00 AM,71.9999999937136,0.189
11/10/2016 9:46:00 AM,74.0000000002328,0.084
11/10/2016 9:47:00 AM,74.9999999930151,0.086
11/10/2016 9:49:00 AM,76.9999999995343,0.205
11/10/2016 9:50:00 AM,77.9999999923166,0.208
11/10/2016 9:51:00 AM,78.9999999955762,0.209
11/10/2016 9:53:00 AM,81.0000000020955,0.205
11/10/2016 9:54:00 AM,81.9999999948777,0.554
11/10/2016 9:56:00 AM,84.000000001397,0.51
11/10/2016 9:57:00 AM,84.9999999941792,0.227
11/10/2016 9:59:00 AM,87.0000000006985,0.215
11/10/2016 10:00:00 AM,87.9999999934807,0.211
11/10/2016 10:01:00 AM,88.9999999967404,0.21
11/10/2016 10:03:00 AM,90.9999999927823,0.095
11/10/2016 10:04:00 AM,91.9999999960419,0.089
11/10/2016 10:06:00 AM,93.9999999920838,0.213
11/10/2016 10:07:00 AM,94.9999999953434,0.231
11/10/2016 10:09:00 AM,97.0000000018626,0.204
11/10/2016 10:10:00 AM,97.9999999946449,0.203
11/10/2016 10:12:00 AM,100.000000001164,0.22
11/10/2016 10:13:00 AM,100.999999993946,0.216
11/10/2016 10:14:00 AM,101.999999997206,0.223
11/10/2016 10:16:00 AM,103.999999993248,0.213
11/10/2016 10:17:00 AM,104.999999996508,0.217
11/10/2016 10:19:00 AM,106.999999992549,0.232
11/10/2016 10:20:00 AM,107.999999995809,0.238
11/10/2016 10:22:00 AM,109.999999991851,0.23
11/10/2016 10:23:00 AM,110.999999995111,0.228
11/10/2016 10:25:00 AM,113.00000000163,0.219
11/10/2016 10:26:00 AM,113.999999994412,0.226
11/10/2016 10:27:00 AM,114.999999997672,0.229
11/10/2016 10:29:00 AM,116.999999993714,0.226
11/10/2016 10:30:00 AM,117.999999996973,0.231
11/10/2016 10:32:00 AM,119.999999993015,0.232
11/10/2016 10:33:00 AM,120.999999996275,0.233
11/10/2016 10:35:00 AM,122.999999992317,0.234
11/10/2016 10:36:00 AM,123.999999995576,0.237
11/10/2016 10:38:00 AM,126.000000002095,0.239
11/10/2016 10:39:00 AM,126.999999994878,0.238
11/10/2016 10:40:00 AM,127.999999998137,0.22
11/10/2016 10:42:00 AM,129.999999994179,0.224
11/10/2016 10:43:00 AM,130.999999997439,0.229
11/10/2016 10:45:00 AM,132.999999993481,0.237
11/10/2016 10:46:00 AM,133.99999999674,0.229
11/10/2016 10:48:00 AM,135.999999992782,0.245
11/10/2016 10:49:00 AM,136.999999996042,0.247
11/10/2016 10:51:00 AM,138.999999992084,0.228
11/10/2016 10:52:00 AM,139.999999995343,0.231
11/10/2016 10:53:00 AM,140.999999998603,0.238
11/10/2016 10:55:00 AM,142.999999994645,0.126
11/10/2016 10:56:00 AM,143.999999997905,0.131
11/10/2016 10:58:00 AM,145.999999993946,0.238
11/10/2016 10:59:00 AM,146.999999997206,0.23
11/10/2016 11:01:00 AM,148.999999993248,0.255
11/10/2016 11:02:00 AM,149.999999996508,0.251
11/10/2016 11:03:00 AM,150.999999999767,0.24
11/10/2016 11:05:00 AM,152.999999995809,0.24
11/10/2016 11:06:00 AM,153.999999999069,0.254
11/10/2016 11:08:00 AM,155.999999995111,0.261
11/10/2016 11:09:00 AM,156.99999999837,0.26
11/10/2016 11:11:00 AM,158.999999994412,0.244
11/10/2016 11:12:00 AM,159.999999997672,0.48
11/10/2016 11:14:00 AM,161.999999993714,0.248
11/10/2016 11:15:00 AM,162.999999996973,0.247
11/10/2016 11:16:00 AM,164.000000000233,0.247
11/10/2016 11:18:00 AM,165.999999996275,0.245
11/10/2016 11:19:00 AM,166.999999999534,0.246
11/10/2016 11:21:00 AM,168.999999995576,0.134
11/10/2016 11:22:00 AM,169.999999998836,0.113
11/10/2016 11:24:00 AM,171.999999994878,0.266
11/10/2016 11:25:00 AM,172.999999998137,0.28
11/10/2016 11:27:00 AM,174.999999994179,0.265
11/10/2016 11:28:00 AM,175.999999997439,0.25
11/10/2016 11:29:00 AM,177.000000000698,0.49
11/10/2016 11:31:00 AM,178.99999999674,0.504
11/10/2016 11:32:00 AM,180,0.246
11/10/2016 11:34:00 AM,181.999999996042,0.246
11/10/2016 11:35:00 AM,182.999999999302,0.259
11/10/2016 11:37:00 AM,184.999999995343,0.232
11/10/2016 11:38:00 AM,185.999999998603,0.121
11/10/2016 11:39:00 AM,187.000000001863,0.127
11/10/2016 11:41:00 AM,188.999999997905,0.25
11/10/2016 11:42:00 AM,190.000000001164,0.267
11/10/2016 11:44:00 AM,191.999999997206,0.243
11/10/2016 11:45:00 AM,193.000000000466,0.263
11/10/2016 11:47:00 AM,194.999999996508,0.252
11/10/2016 11:48:00 AM,195.999999999767,0.267
11/10/2016 11:50:00 AM,197.999999995809,0.245
11/10/2016 11:51:00 AM,198.999999999069,0.26
11/10/2016 11:52:00 AM,199.999999991851,0.257
11/10/2016 11:54:00 AM,201.99999999837,0.262
11/10/2016 11:55:00 AM,203.00000000163,0.488
11/10/2016 11:57:00 AM,204.999999997672,0.524
11/10/2016 11:58:00 AM,206.000000000931,0.254
11/10/2016 12:00:00 PM,207.999999996973,0.247
11/10/2016 12:01:00 PM,209.000000000233,0.254
11/10/2016 12:03:00 PM,210.999999996275,0.252
11/10/2016 12:04:00 PM,211.999999999534,0.133
11/10/2016 12:05:00 PM,212.999999992317,0.129
11/10/2016 12:07:00 PM,214.999999998836,0.241
11/10/2016 12:08:00 PM,216.000000002095,0.256
11/10/2016 12:10:00 PM,217.999999998137,0.257
11/10/2016 12:11:00 PM,219.000000001397,0.264
11/10/2016 12:13:00 PM,220.999999997439,0.259
11/10/2016 12:14:00 PM,222.000000000698,0.284
11/10/2016 12:16:00 PM,223.99999999674,0.266
11/10/2016 12:17:00 PM,225,0.278
11/10/2016 12:18:00 PM,225.999999992782,0.261
11/10/2016 12:20:00 PM,227.999999999302,0.264
11/10/2016 12:21:00 PM,228.999999992084,0.269
11/10/2016 12:23:00 PM,230.999999998603,0.265
11/10/2016 12:24:00 PM,232.000000001863,0.249
11/10/2016 12:26:00 PM,233.999999997905,0.256
11/10/2016 12:27:00 PM,235.000000001164,0.258
11/10/2016 12:29:00 PM,236.999999997206,0.266
11/10/2016 12:30:00 PM,238.000000000466,0.139
11/10/2016 12:31:00 PM,238.999999993248,0.244
11/10/2016 12:33:00 PM,240.999999999767,0.257
11/10/2016 12:34:00 PM,241.999999992549,0.249
11/10/2016 12:36:00 PM,243.999999999069,0.263
11/10/2016 12:37:00 PM,244.999999991851,0.298
11/10/2016 12:39:00 PM,246.99999999837,0.28
11/10/2016 12:40:00 PM,248.00000000163,0.274
11/10/2016 12:41:00 PM,248.999999994412,0.274
11/10/2016 12:43:00 PM,251.000000000931,0.287
11/10/2016 12:44:00 PM,251.999999993714,0.274
11/10/2016 12:46:00 PM,254.000000000233,0.28
11/10/2016 12:47:00 PM,254.999999993015,0.477
11/10/2016 12:49:00 PM,256.999999999534,0.41
11/10/2016 12:50:00 PM,257.999999992317,0.257
11/10/2016 12:52:00 PM,259.999999998836,0.274
11/10/2016 12:53:00 PM,261.000000002095,0.257
11/10/2016 12:54:00 PM,261.999999994878,0.261
11/10/2016 12:56:00 PM,264.000000001397,0.148
11/10/2016 12:57:00 PM,264.999999994179,0.144
11/10/2016 12:59:00 PM,267.000000000698,0.28
11/10/2016 1:00:00 PM,267.999999993481,0.28
11/10/2016 1:02:00 PM,270,0.283
11/10/2016 1:03:00 PM,270.999999992782,0.264
11/10/2016 1:05:00 PM,272.999999999302,0.471
11/10/2016 1:06:00 PM,273.999999992084,0.382
11/10/2016 1:07:00 PM,274.999999995343,0.253
11/10/2016 1:09:00 PM,277.000000001863,0.268
11/10/2016 1:10:00 PM,277.999999994645,0.258
11/10/2016 1:12:00 PM,280.000000001164,0.264
11/10/2016 1:13:00 PM,280.999999993946,0.158
11/10/2016 1:15:00 PM,283.000000000466,0.287
11/10/2016 1:16:00 PM,283.999999993248,0.267
11/10/2016 1:18:00 PM,285.999999999767,0.266
11/10/2016 1:19:00 PM,286.999999992549,0.277
11/10/2016 1:20:00 PM,287.999999995809,0.274
11/10/2016 1:22:00 PM,289.999999991851,0.259
11/10/2016 1:23:00 PM,290.999999995111,0.265
11/10/2016 1:25:00 PM,293.00000000163,0.276
11/10/2016 1:26:00 PM,293.999999994412,0.266
11/10/2016 1:28:00 PM,296.000000000931,0.276
11/10/2016 1:29:00 PM,296.999999993714,0.277
11/10/2016 1:31:00 PM,299.000000000233,0.532
11/10/2016 1:32:00 PM,299.999999993015,0.47
11/10/2016 1:33:00 PM,300.999999996275,0.262
11/10/2016 1:35:00 PM,302.999999992317,0.284
11/10/2016 1:36:00 PM,303.999999995576,0.282
11/10/2016 1:38:00 PM,306.000000002095,0.275
11/10/2016 1:39:00 PM,306.999999994878,0.154
11/10/2016 1:41:00 PM,309.000000001397,0.185
11/10/2016 1:42:00 PM,309.999999994179,0.29
11/10/2016 1:44:00 PM,312.000000000698,0.267
11/10/2016 1:45:00 PM,312.999999993481,0.281
11/10/2016 1:46:00 PM,313.99999999674,0.284
11/10/2016 1:48:00 PM,315.999999992782,0.281
11/10/2016 1:49:00 PM,316.999999996042,0.272
11/10/2016 1:51:00 PM,318.999999992084,0.27
11/10/2016 1:52:00 PM,319.999999995343,0.274
11/10/2016 1:54:00 PM,322.000000001863,0.287
11/10/2016 1:55:00 PM,322.999999994645,0.286
11/10/2016 1:56:00 PM,323.999999997905,0.276
11/10/2016 1:58:00 PM,325.999999993946,0.268
11/10/2016 1:59:00 PM,326.999999997206,0.285
11/10/2016 2:01:00 PM,328.999999993248,0.303
11/10/2016 2:02:00 PM,329.999999996508,0.264
11/10/2016 2:04:00 PM,331.999999992549,0.284
11/10/2016 2:05:00 PM,332.999999995809,0.269
11/10/2016 2:07:00 PM,334.999999991851,0.278
11/10/2016 2:08:00 PM,335.999999995111,0.283
11/10/2016 2:09:00 PM,336.99999999837,0.285
11/10/2016 2:11:00 PM,338.999999994412,0.259
11/10/2016 2:12:00 PM,339.999999997672,0.283
11/10/2016 2:14:00 PM,341.999999993714,0.269
11/10/2016 2:15:00 PM,342.999999996973,0.285
11/10/2016 2:17:00 PM,344.999999993015,0.281
11/10/2016 2:18:00 PM,345.999999996275,0.27
11/10/2016 2:20:00 PM,347.999999992317,0.281
11/10/2016 2:21:00 PM,348.999999995576,0.273
11/10/2016 2:22:00 PM,349.999999998836,0.288
11/10/2016 2:24:00 PM,351.999999994878,0.29
11/10/2016 2:25:00 PM,352.999999998137,0.285
11/10/2016 2:27:00 PM,354.999999994179,0.289
11/10/2016 2:28:00 PM,355.999999997439,0.294
11/10/2016 2:30:00 PM,357.999999993481,0.279
11/10/2016 2:31:00 PM,358.99999999674,0.281
11/10/2016 2:33:00 PM,360.999999992782,0.296
11/10/2016 2:34:00 PM,361.999999996042,0.274
11/10/2016 2:35:00 PM,362.999999999302,0.268
11/10/2016 2:37:00 PM,364.999999995343,0.28
11/10/2016 2:38:00 PM,365.999999998603,0.287
11/10/2016 2:40:00 PM,367.999999994645,0.299
11/10/2016 2:41:00 PM,368.999999997905,0.288
11/10/2016 2:43:00 PM,370.999999993946,0.274
11/10/2016 2:44:00 PM,371.999999997206,0.282
11/10/2016 2:45:00 PM,373.000000000466,0.267
11/10/2016 2:47:00 PM,374.999999996508,0.269
11/10/2016 2:48:00 PM,375.999999999767,0.264
11/10/2016 2:50:00 PM,377.999999995809,0.277
11/10/2016 2:51:00 PM,378.999999999069,0.268
11/10/2016 2:53:00 PM,380.999999995111,0.317
11/10/2016 2:54:00 PM,381.99999999837,0.274
11/10/2016 2:56:00 PM,383.999999994412,0.288
11/10/2016 2:57:00 PM,384.999999997672,0.267
11/10/2016 2:58:00 PM,386.000000000931,0.269
11/10/2016 3:00:00 PM,387.999999996973,0.271
11/10/2016 3:01:00 PM,389.000000000233,0.285
11/10/2016 3:03:00 PM,390.999999996275,0.306
11/10/2016 3:04:00 PM,391.999999999534,0.283
11/10/2016 3:06:00 PM,393.999999995576,0.277
11/10/2016 3:07:00 PM,394.999999998836,0.261
11/10/2016 3:09:00 PM,396.999999994878,0.289
11/10/2016 3:10:00 PM,397.999999998137,0.285
11/10/2016 3:11:00 PM,399.000000001397,0.282
11/10/2016 3:13:00 PM,400.999999997439,0.277
11/10/2016 3:14:00 PM,402.000000000698,0.286
11/10/2016 3:16:00 PM,403.99999999674,0.261
11/10/2016 3:17:00 PM,405,0.269
11/10/2016 3:19:00 PM,406.999999996042,0.278
11/10/2016 3:20:00 PM,407.999999999302,0.287
11/10/2016 3:22:00 PM,409.999999995343,0.274
11/10/2016 3:23:00 PM,410.999999998603,0.268
11/10/2016 3:24:00 PM,412.000000001863,0.291
11/10/2016 3:26:00 PM,413.999999997905,0.272
11/10/2016 3:27:00 PM,415.000000001164,0.281
11/10/2016 3:29:00 PM,416.999999997206,0.272
11/10/2016 3:30:00 PM,418.000000000466,0.272
11/10/2016 3:32:00 PM,419.999999996508,0.275
