ENA/GHG/C1 - System probationary period

System probationary period, may not be useful for science data due to non-optimal 
functioning of the measurement system.

Additional information:
2015-04-22 10:28:00,2015-07-08 09:59:00 - Chiller failure, pressure controller failure 
during shipment for field deployment
2015-07-08 10:00:00,2015-10-12 00:00:00 - Chiller repaired, pressure controller failure
2015-10-12 00:01:00,2015-10-16 23:59:59 - Pressure controller replacement and system 
testing. Related to BCR-02211

Do not use the data from this period for science

• Pressure in calibration cylinder 1 line(calibration_cylinder_1_line_pressure)
• Calibration cylinder 2 high pressure(calibration_cylinder_2_pressure)
• Air flow near rear fan in pump box.(rear_fan_flow)
• Measured Nafion box temperature.(nafion_box_temperature)
• Dry purge cylinder high pressure(dry_purge_cylinder_pressure)
• Chiller temperature during 1 minute interval.(chiller_temperature)
• Battery minimum in 1 minute interval(battery_minimum)
• Line pressure of tower inlet(line_pressure_tower_inlet)
• Pressure in dry purge cylinder line(dry_purge_line_pressure)
• Measured pressure control(pressure_control)
• Pressure in calibration cylinder 2 line(calibration_cylinder_2_line_pressure)
• Measured pump box temperature(pump_box_temperature)
• Nafion drier purge pressure(nafion_purge_pressure)
• Flow of Nafion box dry purge(dry_purge_flow)
• Calibration cylinder 1 high pressure(calibration_cylinder_1_pressure)
• Calibration cylinder 3 high pressure(calibration_cylinder_3_pressure)
• Liquid alarm for tower inlet(liquid_alarm_tower_inlet)
• Air flow near front fan in pump box.(front_fan_flow)
• Pressure in calibration cylinder 3 line(calibration_cylinder_3_line_pressure)
• Exhaust flow(exhaust_flow)

• Instrument status indicators(instrument_status)
• Value indicates state of the rotary valco valve (range 1 to 8)(mp_valve_position)
• Analyzer temperature(analyzer_temperature)
• Value indicating which solenoid valve is currently used(solenoid_valve)
• Picarro optical cavity temperature(cavity_temperature)
• Measured CO2 mole fraction(co2)
• Methane dry volume mixing ratio(ch4_dry)
• Picarro etalon temperature(etalon_temperature)
• Outlet DAC (digital to analog converter) value for Picarro cavity pressure
  control(outlet_valve)
• Water vapor volume percentage(h2o_vapor)
• Picarro warm box temperature(warm_box_temperature)
• Cavity pressure(cavity_pressure)
• Carbon dioxide dry volume mixing ratio(co2_dry)
• Methane concentration(ch4)
• Alarm status to be interpreted as a binary number.(alarm_status)
• Species being analyzed during sample(species)