LiDAR PointCloud

Hi All,

Working with point cloud data. I am trying to make a bunch of different rasters representing the different layers of the point cloud. I have never encountered LAS files with only classes 3 (low veg), 5 (high Veg), 10 (reserved), and 99 (unknown). There is no meta data file explaining what is going on. Has anyone run into LAS files like this before? Is there a specific way I should process this to get the info i need (bare earth, low, med, high veg)?

Thanks in advance,

David