calculate_gaps_perc2    Compute the percentile value of each height
get_cum_break           CBH and the LAD percentage below and above the
                        CBH using the breaking point method
get_depths              Fuels depth in meters
get_distance            Distances between fuel layers
get_effective_gap       Effective Distances and CBHs based on maximum
                        and last distance
get_gaps_fbhs           Gaps and Fuel layers Base Height (FBH)
get_layers_lad          Leaf Area Density (LAD) percentage comprised in
                        each fuel layer and canopy base height (CBH)
                        based on maximum LAD percentage (distances
                        greater than 1 m)
get_plots_cbh_LAD       Plots of fuel layers with LAD percentage > 5
                        and the canopy base height (CBH) based on the
                        maximum LAD percentage
get_plots_cumm          Plot of tree profiles with the canopy base
                        height (CBH) based on the breaking point method
get_plots_gap_fbh       Plots of tree profiles with gaps and fuel
                        layers base height (fbh)
get_real_depths         Effective fuel layers depth
get_real_fbh            Fuels base height after removing distances = 1
                        m
get_renamed0_df         Rename and reorder columns (I)
get_renamed_df          Rename and reorder columns (II)
