angle angle_squared total_holds hand_holds foot_holds start_holds finish_holds middle_holds is_nomatch mean_y std_x std_y range_x range_y min_y max_y height_gained height_gained_start_finish bbox_area hold_density holds_per_vertical_foot left_ratio symmetry_score upper_ratio mean_hand_reach max_hand_reach std_hand_reach hand_spread_x hand_spread_y min_hand_to_foot mean_hand_to_foot std_hand_to_foot convex_hull_area hull_area_to_bbox_ratio mean_pairwise_distance std_pairwise_distance path_length_vertical path_efficiency mean_y_normalized start_height_normalized finish_height_normalized mean_y_relative_to_start spread_x_normalized spread_y_normalized y_q75 y_iqr complexity_score display_difficulty angle_x_holds