---
instrument_id: '350'
data_file_original_name: '20140127_OH.csv'
skip_headers: '1'
charts: ''
headers:
    - 'Start_UTC'
    - 'Stop_UTC'
    - 'Mid_UTC'
    - 'OH_chem'
    - 'OH_interference'
dataset_id: '1282'
experiment_link: 'https://icarus.ucdavis.edu/chambers/545/experiments/408'
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 14:05:06'
dataset_updated_at: '2020-10-20 10:51:32'
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
68492,69091,68792,0.047,-0.059
69092,69691,69392,0.040,-0.044
69692,70291,69992,0.006,-0.023
70292,70891,70592,0.003,-0.028
70892,71491,71192,0.022,-0.032
71492,72091,71792,-0.001,0.023
72092,72691,72392,-0.030,0.033
72692,73291,72992,-0.005,-0.018
73292,73891,73592,-0.001,-0.019
73892,74491,74192,-0.015,-0.004
74492,75091,74792,-0.019,0.027
75092,75691,75392,0.003,0.005
75692,76291,75992,-9999.000,-9999.000
76292,76891,76592,-9999.000,-9999.000
76892,77491,77192,0.008,-0.010
77492,78091,77792,-0.015,-0.007
78092,78691,78392,0.004,-0.006
78692,79291,78992,0.031,-0.034
79292,79891,79592,1.227,0.179
79892,80491,80192,1.351,0.551
80492,81091,80792,1.097,0.677
81092,81691,81392,0.856,0.697
81692,82291,81992,0.772,0.617
82292,82891,82592,0.796,0.469
82892,83491,83192,0.555,0.637
83492,84091,83792,0.433,0.620
84092,84691,84392,0.526,0.492
84692,85291,84992,0.473,0.411
85292,85891,85592,0.355,0.422
85892,86491,86192,0.335,0.378
86492,87091,86792,0.348,0.350
87092,87691,87392,0.248,0.395
87692,88291,87992,0.271,0.327
88292,88891,88592,0.263,0.299
88892,89491,89192,0.239,0.288
89492,90091,89792,0.427,0.192
90092,90691,90392,0.134,0.328
90692,91291,90992,0.034,0.504
91292,91891,91592,-0.001,0.657