---
instrument_id: '350'
data_file_original_name: '20140123_OH.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Start_UTC'
    - 'Stop_UTC'
    - 'Mid_UTC'
    - 'OH_chem'
    - 'OH_interference'
dataset_id: '1226'
experiment_link: 'https://icarus.ucdavis.edu/chambers/545/experiments/406'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/545/experimentSets/162'
chamber_link: 'https://icarus.ucdavis.edu/chambers/545'
dataset_created_at: '2020-09-08 13:59:55'
dataset_updated_at: '2020-10-25 22:12:44'
instrument_link: 'https://icarus.ucdavis.edu/chambers/545/instruments/350'
instrument:
    id: '350'
    short_name: 'GTHOS_OH'
    full_name: 'Ground-based Hydrogen Oxides Sensor reporting OH (Brune)'
    manufacturer: 'Custom'
    model: 'Custom'
    year: ''
    data_recording_software: 'Inquire with PI'
    data_analysis_software: 'Inquire with PI'
    raw_data_time_resolution: 'Inquire with PI'
    analysis_data_averaging: 'Inquire with PI'
    detection_limit: '1.4e5 molec/cm3'
    quantification_limit: ''
    sensitivity_to_temperature: 'Inquire with PI'
    sensitivity_to_relative_humidity: 'Inquire with PI'
    sampling_method: 'Direct sampling'
    sample_preparation_method: 'None'
    sample_residence_time_in_seconds: ''
    length_of_tubing_in_cm: '5'
    flow_rate: '6 LPM'
    tubing_material: 'Stainless Steel'
    chemical_identification_method: 'Laser-Induced Fluorescence of OH'
    data_analysis_method: 'Inquire with PI'
    quantification_method: 'Applying the direct calibration factor for OH'
    calibration_method: 'Producing known amounts of OH in a discharge flow tube, see Brune et al., J. Atmos. Sci., 1995'
    calibration_drift_estimate: ''
    calibration_schedule: ''
    uncertainty_estimation_method: 'Total uncertainty based on calibration uncertainties'
    known_interferences: 'Interference around instances of high biogenic activity that is temperature dependent (see Mao et al., ACP, 2012). This is corrected for by chemical zeroing.'
    link_to_supplemental_information: 'https://journals.ametsoc.org/doi/pdf/10.1175/1520-0469%281995%29052%3C3328%3AMOAHIT%3E2.0.CO%3B2'
    additional_notes: 'PI is William Brune from Penn State'
    organization_id: '551'
    created_at: '2020-01-10T01:26:05.000000Z'
    updated_at: '2021-07-27T23:06:03.000000Z'
    column_descriptors: '"OH chem" means the OH radical concentration obtained after chemical zeroing using C3F6 - this is the "real" OH present in the chamber. "OH intereference" is the additional signal read as OH that is not OH, this is an artifact made inside the instrument (do not use as OH).'
    sampling_protocol: 'Online'
    skip_headers: '1'
    tubing_inner_diameter: 'Inquire with PI'
    what_is_measured: 'Hydroxyl radicals (OH)'
    measurement_uncertainty: 'OH chem uncertainty (32 pptv), OH interference uncertainty (32 pptv)'
    measurement_units: 'Time (units: seconds), OH chem (units pptv), OH interference (units pptv)'

---
Start_UTC,Stop_UTC,Mid_UTC,OH_chem,OH_interference
70272,70871,70572,0.049,0.225
70872,71471,71172,0.028,0.223
71472,72071,71772,-0.022,0.258
72072,72671,72372,-0.020,0.523
72672,73271,72972,0.086,0.547
73272,73871,73572,0.069,0.605
73872,74471,74172,0.071,0.560
74472,75071,74772,0.059,0.579
75072,75671,75372,0.039,0.580
75672,76271,75972,-0.011,0.574
76272,76871,76572,0.055,0.537
76872,77471,77172,0.061,0.494
77472,78071,77772,0.113,0.479
78072,78671,78372,-0.014,0.548
78672,79271,78972,-0.034,0.539
79272,79871,79572,0.092,0.417
79872,80471,80172,0.043,0.449
80472,81071,80772,0.022,0.457
81072,81671,81372,-0.041,0.458
81672,82271,81972,0.080,0.359
82272,82871,82572,0.022,0.378
82872,83471,83172,0.010,0.353
83472,84071,83772,-0.054,0.381
84072,84671,84372,-0.087,0.409
84672,85271,84972,0.023,0.326
85272,85871,85572,0.038,0.310
85872,86471,86172,-0.016,0.323
86472,87071,86772,-0.014,0.317
87072,87671,87372,0.032,0.266
87672,88271,87972,0.026,0.257
88272,88871,88572,0.001,0.279
88872,89471,89172,0.047,0.236
89472,90071,89772,0.023,0.248
90072,90671,90372,0.038,0.237
90672,91271,90972,0.058,0.249
91272,91871,91572,0.026,0.325
91872,92471,92172,0.064,0.356
92472,93071,92772,0.030,0.444
93072,93671,93372,0.020,0.490
93672,94271,93972,0.091,0.473