ASI/CEIL/M1 - data communication

The data were intermittent, especially on 7/19/2016, due to poor serial communication. The 
cable was repaired on 7/21 and the serial device server and instrument were power-cycled 
on 7/28.

• Raw data stream - documentation not supported

• status_flag
• backscatter
• laser_pulse_energy
• second_cbh
• laser_temperature
• vertical_visibility
• sum_backscatter
• status_string
• range_bounds
• first_cbh
• third_cbh
• window_transmission
• tilt_angle
• measurement_parameters
• range
• alt_highest_signal
• detection_status
• background_light