---
instrument_id: '443'
data_file_original_name: 'EPA2271A_HTDMA.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Local_Time_PST'
    - 'Experimental_Time_min'
    - 'Growth_Factor_unitless'
dataset_id: '2452'
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/443'
instrument:
    id: '443'
    short_name: 'HTDMA'
    full_name: 'Hygroscopicity Tandem Differential Mobility Analyzer'
    manufacturer: 'Home-made'
    model: 'TSI3081, TSI3771'
    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 HTDMA data that were recorded in scanning mode are analyzed using a custom MATLAB script. Particle size distribution, as a function of time are displayed. Hygroscopicity is indicated 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 particle growing device 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: ''
    organization_id: '547'
    created_at: '2020-06-09T00:37:45.000000Z'
    updated_at: '2020-06-09T00:37:45.000000Z'
    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) Growth_Factor = Index for particle qualitative hygroscopicity (the ratio between the volume after particles getting through the growing chamber and before the entrance)."
    sampling_protocol: 'Online'
    skip_headers: '1'
    tubing_inner_diameter: '1/4'''' OD; 0.152'''' ID'
    what_is_measured: 'Particle Hygroscopicity'
    measurement_uncertainty: '(a) Local_Time (N/A); (b) Experimental_Time (N/A); (c) Growth_Factor (+/- ?%)'
    measurement_units: '(a) Local_Time (N/A); (b) Experimental_Time (min); (c) Growth_Factor (N/A)'

---
Local_Time_PST,Experimental_Time_min,Growth_Factor_unitless
11/3/2016 12:05:00 PM,-10.0000000011642,0.599
11/3/2016 12:07:00 PM,-7.9999999946449,3.125
11/3/2016 12:08:00 PM,-6.99999999138527,0
11/3/2016 12:10:00 PM,-4.99999999534339,1.479
11/3/2016 12:11:00 PM,-3.99999999208376,0.924
11/3/2016 12:12:00 PM,-2.99999999930151,0.909
11/3/2016 12:14:00 PM,-0.99999999278225,0.94
11/3/2016 12:15:00 PM,0,0.591
11/3/2016 12:17:00 PM,2.00000000651926,0.842
11/3/2016 12:18:00 PM,2.99999999930151,0.787
11/3/2016 12:20:00 PM,5.00000000582077,0.667
11/3/2016 12:21:00 PM,5.99999999860302,1.622
11/3/2016 12:23:00 PM,8.00000000512227,0.674
11/3/2016 12:24:00 PM,9.0000000083819,0.862
11/3/2016 12:25:00 PM,10.0000000011642,0.724
11/3/2016 12:27:00 PM,12.0000000076834,2.003
11/3/2016 12:28:00 PM,13.0000000004657,0.629
11/3/2016 12:30:00 PM,15.0000000069849,1.09
11/3/2016 12:31:00 PM,15.9999999997672,1.631
11/3/2016 12:33:00 PM,18.0000000062864,0.878
11/3/2016 12:34:00 PM,18.9999999990687,0.8
11/3/2016 12:36:00 PM,21.0000000055879,0
11/3/2016 12:37:00 PM,21.9999999983702,1.181
11/3/2016 12:38:00 PM,23.0000000016298,1.133
11/3/2016 12:40:00 PM,25.0000000081491,1.046
11/3/2016 12:41:00 PM,26.0000000009313,0.691
11/3/2016 12:43:00 PM,28.0000000074506,2.491
11/3/2016 12:44:00 PM,29.0000000002328,2.396
11/3/2016 12:46:00 PM,31.0000000067521,3.171
11/3/2016 12:47:00 PM,31.9999999995343,0.738
11/3/2016 12:48:00 PM,33.000000002794,0.666
11/3/2016 12:50:00 PM,34.9999999988358,0.956
11/3/2016 12:51:00 PM,36.0000000020955,0.617
11/3/2016 12:53:00 PM,38.0000000086147,0
11/3/2016 12:54:00 PM,39.000000001397,0.622
11/3/2016 12:56:00 PM,41.0000000079162,2.228
11/3/2016 12:57:00 PM,42.0000000006985,0.94
11/3/2016 12:59:00 PM,44.0000000072177,0.818
11/3/2016 1:00:00 PM,45,2.424
11/3/2016 1:01:00 PM,46.0000000032596,0.623
11/3/2016 1:03:00 PM,47.9999999993015,0.943
11/3/2016 1:04:00 PM,49.0000000025611,0.805
11/3/2016 1:06:00 PM,50.999999998603,0.819
11/3/2016 1:07:00 PM,52.0000000018626,0.626
11/3/2016 1:09:00 PM,54.0000000083819,0.648
11/3/2016 1:10:00 PM,55.0000000011642,0.595
11/3/2016 1:12:00 PM,57.0000000076834,0.485
11/3/2016 1:13:00 PM,58.0000000004657,0.085
11/3/2016 1:14:00 PM,59.0000000037253,0.254
11/3/2016 1:16:00 PM,60.9999999997672,1.009
11/3/2016 1:17:00 PM,62.0000000030268,0.714
11/3/2016 1:19:00 PM,63.9999999990687,0.819
11/3/2016 1:20:00 PM,65.0000000023283,0.739
11/3/2016 1:22:00 PM,66.9999999983702,0
11/3/2016 1:23:00 PM,68.0000000016298,0.941
11/3/2016 1:25:00 PM,70.0000000081491,0.986
11/3/2016 1:26:00 PM,71.0000000009313,1.021
11/3/2016 1:27:00 PM,72.000000004191,1.035
11/3/2016 1:29:00 PM,74.0000000002328,1.003
11/3/2016 1:30:00 PM,75.0000000034925,1.004
11/3/2016 1:32:00 PM,76.9999999995343,1.003
11/3/2016 1:33:00 PM,78.000000002794,1.01
11/3/2016 1:35:00 PM,79.9999999988358,1.005
11/3/2016 1:36:00 PM,81.0000000020955,1.016
11/3/2016 1:38:00 PM,83.0000000086147,1.019
11/3/2016 1:39:00 PM,84.000000001397,1.019
11/3/2016 1:40:00 PM,85.0000000046566,1.018
11/3/2016 1:42:00 PM,87.0000000006985,1.016
11/3/2016 1:43:00 PM,88.0000000039581,1.017
11/3/2016 1:45:00 PM,90,1.021
11/3/2016 1:46:00 PM,91.0000000032596,1.021
11/3/2016 1:48:00 PM,92.9999999993015,1.022
11/3/2016 1:49:00 PM,94.0000000025611,1.028
11/3/2016 1:51:00 PM,95.999999998603,1.026
11/3/2016 1:52:00 PM,97.0000000018626,1.023
11/3/2016 1:53:00 PM,98.0000000051223,1.015
11/3/2016 1:55:00 PM,100.000000001164,1.018
11/3/2016 1:56:00 PM,101.000000004424,1.028
11/3/2016 1:58:00 PM,103.000000000466,1.023
11/3/2016 1:59:00 PM,104.000000003725,1.02
11/3/2016 2:01:00 PM,105.999999999767,1.029
11/3/2016 2:02:00 PM,107.000000003027,1.032
11/3/2016 2:04:00 PM,108.999999999069,1.028
11/3/2016 2:05:00 PM,110.000000002328,1.039
11/3/2016 2:06:00 PM,111.000000005588,1.032
11/3/2016 2:08:00 PM,113.00000000163,1.018
11/3/2016 2:09:00 PM,114.000000004889,1.014
11/3/2016 2:11:00 PM,116.000000000931,1.029
11/3/2016 2:12:00 PM,117.000000004191,1.032
11/3/2016 2:14:00 PM,119.000000000233,1.034
11/3/2016 2:15:00 PM,120.000000003492,1.034
11/3/2016 2:16:00 PM,121.000000006752,1.037
11/3/2016 2:18:00 PM,123.000000002794,1.041
11/3/2016 2:19:00 PM,124.000000006054,1.038
11/3/2016 2:21:00 PM,126.000000002095,1.031
11/3/2016 2:22:00 PM,127.000000005355,1.026
11/3/2016 2:24:00 PM,129.000000001397,1.03
11/3/2016 2:25:00 PM,130.000000004657,1.034
11/3/2016 2:27:00 PM,132.000000000698,1.025
11/3/2016 2:28:00 PM,133.000000003958,1.038
11/3/2016 2:29:00 PM,134.000000007218,1.036
11/3/2016 2:31:00 PM,136.00000000326,1.037
11/3/2016 2:32:00 PM,137.000000006519,1.041
11/3/2016 2:34:00 PM,139.000000002561,1.035
11/3/2016 2:35:00 PM,140.000000005821,1.039
11/3/2016 2:37:00 PM,142.000000001863,1.033
11/3/2016 2:38:00 PM,143.000000005122,1.035
11/3/2016 2:40:00 PM,145.000000001164,1.03
11/3/2016 2:41:00 PM,146.000000004424,1.037
11/3/2016 2:42:00 PM,147.000000007683,1.04
11/3/2016 2:44:00 PM,149.000000003725,1.034
11/3/2016 2:45:00 PM,150.000000006985,1.036
11/3/2016 2:47:00 PM,152.000000003027,1.043
11/3/2016 2:48:00 PM,153.000000006286,1.033
11/3/2016 2:50:00 PM,155.000000002328,1.033
11/3/2016 2:51:00 PM,156.000000005588,1.031
11/3/2016 2:53:00 PM,158.00000000163,1.035
11/3/2016 2:54:00 PM,159.000000004889,1.034
11/3/2016 2:55:00 PM,160.000000008149,1.041
11/3/2016 2:57:00 PM,162.000000004191,1.04
11/3/2016 2:58:00 PM,163.000000007451,1.037
11/3/2016 3:00:00 PM,165.000000003492,1.046
11/3/2016 3:01:00 PM,166.000000006752,1.038
11/3/2016 3:03:00 PM,168.000000002794,1.046
11/3/2016 3:04:00 PM,169.000000006054,1.044
11/3/2016 3:06:00 PM,171.000000002095,0.774
11/3/2016 3:07:00 PM,172.000000005355,1.023
11/3/2016 3:08:00 PM,173.000000008615,1.027
11/3/2016 3:10:00 PM,175.000000004657,1.027
11/3/2016 3:11:00 PM,176.000000007916,1.027
11/3/2016 3:13:00 PM,178.000000003958,1.025
11/3/2016 3:14:00 PM,179.000000007218,1.024
11/3/2016 3:16:00 PM,181.00000000326,1.025
11/3/2016 3:17:00 PM,182.000000006519,1.031
11/3/2016 3:19:00 PM,184.000000002561,1.021
11/3/2016 3:20:00 PM,185.000000005821,1.028
11/3/2016 3:21:00 PM,185.999999998603,1.034
11/3/2016 3:23:00 PM,188.000000005122,1.393
11/3/2016 3:24:00 PM,189.000000008382,1.036
11/3/2016 3:26:00 PM,191.000000004424,1.032
11/3/2016 3:27:00 PM,192.000000007683,1.033
11/3/2016 3:29:00 PM,194.000000003725,1.034
11/3/2016 3:30:00 PM,195.000000006985,1.037
11/3/2016 3:31:00 PM,195.999999999767,0.767
11/3/2016 3:33:00 PM,198.000000006286,1.03
11/3/2016 3:34:00 PM,198.999999999069,1.031
11/3/2016 3:36:00 PM,201.000000005588,1.033
11/3/2016 3:37:00 PM,201.99999999837,1.03
11/3/2016 3:39:00 PM,204.000000004889,1.03
11/3/2016 3:40:00 PM,205.000000008149,1.396
11/3/2016 3:42:00 PM,207.000000004191,1.035
11/3/2016 3:43:00 PM,208.000000007451,1.028
11/3/2016 3:44:00 PM,209.000000000233,1.039
11/3/2016 3:46:00 PM,211.000000006752,1.034
11/3/2016 3:47:00 PM,211.999999999534,1.04
11/3/2016 3:49:00 PM,214.000000006054,0.769
11/3/2016 3:50:00 PM,214.999999998836,1.039
11/3/2016 3:52:00 PM,217.000000005355,1.04
11/3/2016 3:53:00 PM,218.000000008615,1.038
11/3/2016 3:55:00 PM,220.000000004657,1.039
11/3/2016 3:56:00 PM,221.000000007916,1.04
11/3/2016 3:57:00 PM,222.000000000698,1.042
11/3/2016 3:59:00 PM,224.000000007218,1.04
11/3/2016 4:00:00 PM,225,1.038
11/3/2016 4:02:00 PM,227.000000006519,1.04
11/3/2016 4:03:00 PM,227.999999999302,1.037
11/3/2016 4:05:00 PM,230.000000005821,1.04
11/3/2016 4:06:00 PM,230.999999998603,1.04
11/3/2016 4:08:00 PM,233.000000005122,1.037
11/3/2016 4:09:00 PM,234.000000008382,1.039
11/3/2016 4:10:00 PM,235.000000001164,1.03
11/3/2016 4:12:00 PM,237.000000007683,1.039
11/3/2016 4:13:00 PM,238.000000000466,1.036
11/3/2016 4:15:00 PM,240.000000006985,1.038
11/3/2016 4:16:00 PM,240.999999999767,1.038
11/3/2016 4:18:00 PM,243.000000006286,1.041
11/3/2016 4:19:00 PM,243.999999999069,1.035
11/3/2016 4:21:00 PM,246.000000005588,1.043
11/3/2016 4:22:00 PM,246.99999999837,1.037
11/3/2016 4:23:00 PM,248.00000000163,1.037
11/3/2016 4:25:00 PM,250.000000008149,1.04
11/3/2016 4:26:00 PM,251.000000000931,1.038
11/3/2016 4:28:00 PM,253.000000007451,1.036
11/3/2016 4:29:00 PM,254.000000000233,1.045
11/3/2016 4:31:00 PM,256.000000006752,1.037
11/3/2016 4:32:00 PM,256.999999999534,1.405
11/3/2016 4:34:00 PM,259.000000006054,1.046
11/3/2016 4:35:00 PM,259.999999998836,1.045
11/3/2016 4:36:00 PM,261.000000002095,1.044
11/3/2016 4:38:00 PM,263.000000008615,1.045
11/3/2016 4:39:00 PM,264.000000001397,1.046
11/3/2016 4:41:00 PM,266.000000007916,1.044
11/3/2016 4:42:00 PM,267.000000000698,1.043
11/3/2016 4:44:00 PM,269.000000007218,1.041
11/3/2016 4:45:00 PM,270,1.045
11/3/2016 4:46:00 PM,271.00000000326,1.039
11/3/2016 4:48:00 PM,272.999999999302,1.046
11/3/2016 4:49:00 PM,274.000000002561,0.774
11/3/2016 4:51:00 PM,275.999999998603,1.039
11/3/2016 4:52:00 PM,277.000000001863,1.042
11/3/2016 4:54:00 PM,279.000000008382,1.043
11/3/2016 4:55:00 PM,280.000000001164,1.039
11/3/2016 4:57:00 PM,282.000000007683,1.038
11/3/2016 4:58:00 PM,283.000000000466,1.038
11/3/2016 4:59:00 PM,284.000000003725,1.044
11/3/2016 5:01:00 PM,285.999999999767,1.043
11/3/2016 5:02:00 PM,287.000000003027,1.037
11/3/2016 5:04:00 PM,288.999999999069,1.048
11/3/2016 5:05:00 PM,290.000000002328,1.046
11/3/2016 5:07:00 PM,291.99999999837,1.407
11/3/2016 5:08:00 PM,293.00000000163,1.049
11/3/2016 5:10:00 PM,295.000000008149,1.044
11/3/2016 5:11:00 PM,296.000000000931,1.047
11/3/2016 5:12:00 PM,297.000000004191,1.05
11/3/2016 5:14:00 PM,299.000000000233,1.045
11/3/2016 5:15:00 PM,300.000000003492,0.77
11/3/2016 5:17:00 PM,301.999999999534,1.036
11/3/2016 5:18:00 PM,303.000000002794,1.041
11/3/2016 5:20:00 PM,304.999999998836,1.036
11/3/2016 5:21:00 PM,306.000000002095,1.052
11/3/2016 5:23:00 PM,308.000000008615,1.038
11/3/2016 5:24:00 PM,309.000000001397,1.039
11/3/2016 5:25:00 PM,310.000000004657,1.044
11/3/2016 5:27:00 PM,312.000000000698,1.046
11/3/2016 5:28:00 PM,313.000000003958,1.037
11/3/2016 5:30:00 PM,315,1.047
11/3/2016 5:31:00 PM,316.00000000326,1.047
11/3/2016 5:33:00 PM,317.999999999302,1.044
11/3/2016 5:34:00 PM,319.000000002561,1.038
11/3/2016 5:36:00 PM,320.999999998603,1.039
11/3/2016 5:37:00 PM,322.000000001863,1.04
11/3/2016 5:38:00 PM,323.000000005122,1.039
11/3/2016 5:40:00 PM,325.000000001164,1.046
11/3/2016 5:41:00 PM,326.000000004424,1.041
11/3/2016 5:43:00 PM,328.000000000466,1.039
11/3/2016 5:44:00 PM,329.000000003725,1.041
11/3/2016 5:46:00 PM,330.999999999767,1.039
11/3/2016 5:47:00 PM,332.000000003027,1.043
11/3/2016 5:49:00 PM,333.999999999069,1.044
11/3/2016 5:50:00 PM,335.000000002328,1.037
11/3/2016 5:51:00 PM,336.000000005588,1.05
11/3/2016 5:53:00 PM,338.00000000163,1.044
11/3/2016 5:54:00 PM,339.000000004889,1.052
11/3/2016 5:56:00 PM,341.000000000931,1.038
11/3/2016 5:57:00 PM,342.000000004191,1.034
