SGP/MPL/C1 - Water intrusion

Instrument temperatures were incorrect.  On 02/01 and 02/03 they essentially flat lined at 
0 C, while on 02/02 the temps were lower than normal (although given the external temp 
they may be accurate), with several data spikes throughout the day.

Background signal values were excessively low throughout the entire period. Co- and 
cross-pol plotted values appear to have had a 3-5 km artificial elevation, resulting in plotted 
cloud bases appearing much higher than they actually were.

System was not operating correctly due to water intrusion.

Ignore the data

• Laboratory measured counts used to calculate the deadtime correction samples(deadtime_correction_counts)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• Background signal standard deviation, copol data(background_signal_std_co_pol)
• Number of bins stored in data block(num_bins)
• Subtract from range_bins to yield range(range_offset)
• Telescope temperature(scope_temp)
• Background signal, cross pol data(background_signal_cross_pol)
• Detector Temperature(detector_temp)
• Heights for overlap correction(overlap_correction_heights)
• Polarization control enabled flag(polarization_control)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Preliminary cloud base height above ground level(preliminary_cbh)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Laser output energy per pulse(energy_monitor)
• HLN(VN)
• Attenuated backscatter, cross pol(signal_return_cross_pol)
• Height(height)
• Background signal, co-pol(background_signal_co_pol)
• Background signal standard deviation, cross-pol(background_signal_std_cross_pol)
• Overlap correction(overlap_correction)
• Distance to the center of the corresponding range bin(range)
• Laser Temperature(laser_temp)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Attenuated backscatter, co-pol(signal_return_co_pol)
• Dead time correction flag(dead_time_corrected)
• MCS mode register, value is either 167 or 199.(mcs_mode)
• Bin number of first data. Tells where pretrigger timing ends and end of region
  for background data sampling laser_fire_bin(first_data_bin)
• Deadtime correction factor(deadtime_correction)
• Polarization control voltage setting(polarization_control_voltage)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Number of detector channels(num_channels)