SGP/MPL/C1 - Reduced detection sensitivity

During the time periods indicated, the laser power supply was low.  This resulted in 
compromised detection sensitivity, particularly for thin clouds and/or during daylight hours.  
That is, some clouds may not have been identified.  The low laser power would not have 
resulted in false positives.

• Preliminary cloud base height(preliminary_cbh)

• MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)

• MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)

• Cloud mask(cloud_mask_2)
• Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
• Cloud mask(cloud_mask_1)
• Cloud base height, measured by MPL(cloud_base_height)
• cloud top height(cloud_top_height)

SGP/MPL/C1 - Instrument offline

Instrument was taken offline due to a failure of the laser power supply.  Data are missing 
and unrecoverable.

• base time(base_time)
• Preliminary cloud base height(preliminary_cbh)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Time offset of tweaks from base_time(time_offset)
• Detector Temperature(detector_temp)
• Repetition rate, or Trigger Frequency of the laser(trigger_freq)
• lat(lat)
• range(range)
• Number of laser shots recorded(shots_summed)
• value represents date of last configuration change as yyyymmdd(property)
• Background Signal(background_signal)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)
• Voltage level which operates the thermistor(voltage_10)
• Array of heights for the range gates(height)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Number of laser pulses summed during measurement interval(shots_sum)
• Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
• Laser Temperature(laser_temp)
• Angle of inclination with respect to horizontal(transceiver_altitude_angle)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
• Laser output energy per pulse(energy_monitor)
• Instrument Temperature(instrument_temp)
• Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
• Dummy altitude for Zeb(alt)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• time(time)
• required to correct raw counts for detector deadtime prior to all other
  corrections.(deadtime_correction)
• Voltage level which operates the energy monitor(voltage_15)
• Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
• Filter Temperature(filter_temp)
• Voltage level which operates the A/D card and the detector(voltage_05)
• lon(lon)

• base time(base_time)
• Height of Center of Each Range Bin(Heights)
• MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
• Time offset of tweaks from base_time(time_offset)

• base time(base_time)
• MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
• Time offset of tweaks from base_time(time_offset)
• Height of Center of Each Range Bin(Heights)

• Background Signal(background_signal)
• Instrument Temperature(instrument_temp)
• Time offset of tweaks from base_time(time_offset)
• Cloud base height, measured by MPL(cloud_base_height)
• Laser output energy per pulse(energy_monitor)
• lat(lat)
• Cloud mask(cloud_mask_2)
• Array of heights for the range gates(height)
• Number of laser shots recorded(shots_summed)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• The update time of the historical baseline used for the cloud boundary
  determination of this sample(baseline_update_time)
• cloud top height(cloud_top_height)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
• Detector Temperature(detector_temp)
• Laser Temperature(laser_temp)
• Cloud mask(cloud_mask_1)
• lon(lon)
• base time(base_time)
• Relative random error in backscatter profiles(random_error)
• Dummy altitude for Zeb(alt)