basename   refine_factor          points           cells
        naca0012_tunnel_v3_thex-1.0            1.00         1157207         1699329
        naca0012_tunnel_v3_thex-2.0            2.00         3724414         6281234
        naca0012_tunnel_v3_thex-4.0            4.00        13335797        29005845
        naca0012_tunnel_v3_thex-6.0            6.00        30167279        79482423
        naca0012_tunnel_v3_thex-8.0            8.00        55227077       168180108