Derived from data collected at the University of Virginia Data collected August, 2016 by J. Atkins. Dervied from the calc_vai function
pcl_normA data frame with 1120 rows:
column numbering
x-bin position
z-bin position
number of LiDAR returns at each x- and z- bin
total numer of sky hits per x column
total numer of canopy hits per x column
no. of lidar pulses emitted per column
no idea
total number of hits distributed through canopy
percent of saturation
percent of returns distributed
counting variable
distributed proportion
coefficent