Laser Output Energy Monitor at Zero

Energy monitor reading for laser output is at zero for intermittant
one-minute averaged shots during this flagged data period.  From the
lidar equation progressing to normalized relative backscatter the
laser energy is required and is a denominator.  Therefore a value of
zero will render the product as infinite.  Shots where this has taken
place are left as zeros.  It is suggested that the time period
19970425 2123 - 19970428 1459
be avoided for any quantitative analysis.

• backscatter