area area_x area_y average_branch_length average_line_length branch_freq c_c c_i c_u circ circumference connect_b connect_l created_at d1_intensity d2_intensity dimensionless_intensity e fid fracture_id i i_i i_u id line_freq nc_freq no_of_branches no_of_connections no_of_lines no_of_nodes notb nowb radius rotation sample_No spacing tb_avg topology_id total_trace_length u u_u x y