---
instrument_id: '350'
data_file_original_name: '20140106_OH.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Start_UTC'
    - 'Stop_UTC'
    - 'Mid_UTC'
    - 'OH_chem'
    - 'OH_interference'
dataset_id: '86'
experiment_link: 'https://icarus.ucdavis.edu/chambers/545/experiments/94'
experiment_set_link: 'https://icarus.ucdavis.edu/chambers/545/experimentSets/162'
chamber_link: 'https://icarus.ucdavis.edu/chambers/545'
dataset_created_at: '2020-01-19 14:36:13'
dataset_updated_at: '2020-10-19 09:14:41'
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
66379,66978,66679,-9999.000,-9999.000
66979,67578,67279,-0.143,0.862
67579,68178,67879,0.098,0.798
68179,68778,68479,-0.071,1.186
68779,69378,69079,-0.000,1.243
69379,69978,69679,0.200,1.118
69979,70578,70279,0.171,1.094
70579,71178,70879,0.014,1.200
71179,71778,71479,0.002,1.156
71779,72378,72079,-0.045,1.313
72379,72978,72679,0.051,1.095
72979,73578,73279,-0.010,1.183
73579,74178,73879,-0.083,1.163
74179,74778,74479,-0.165,1.180
74779,75378,75079,0.033,0.987
75379,75978,75679,-0.032,1.152
75979,76578,76279,-0.024,1.018