TWP/MPL/C1 - Time stamps are incorrect.

The computer was experiencing time synchronization problems. The time stamp for the data 
is incorrect. The synchronization continued to get worse throughout the period.  Secondary 
results of the sync problem are data gaps. The problem exhibited itself with data gaps 
at the end of every hour. As the computer continued to get further out of sync, the 
duration of the data gaps increased.

The error in time synchronization can be corrected by comparing the MPL data with another 
instrument such as the ceilometers or MMCR. The error in time can be determined by 
looking for identical cloud structure. Then shift the MPL data in time to match the other 
instruments. Remember the error is not constant; it continues to get worst throughout the period.

• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Background signal(background_signal)
• Laser output energy per pulse(energy_monitor)
• Filter Temperature(filter_temp)
• Laser Temperature(laser_temp)
• base time in epoch(base_time)
• Instrument Temperature(instrument_temp)
• Attenuated backscatter(detector_counts)
• Assumed zero-range bin number(assumed_zero_range_bin)
• Preliminary cloud base height above ground level(preliminary_cbh)
• Voltage level which operates the energy monitor(voltage_15)
• Voltage level which operates the A/D card and the detector(voltage_05)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Time offset from base_time(time_offset)
• Detector Temperature(detector_temp)
• Voltage level which operates the thermistor(voltage_10)
• Number of lidar pulses summed(shots_summed)
• time_in_seconds_since_volume_start(time)
• Subtract from range_bins to yield range(range_offset)

• (Raw data stream - documentation not supported)