从ASCII导出特定数据？

Question

我有一个ASCII文件（每个文件约70GB），在特定的时间段内，结果如下所示：

Planar Power Distribution at Plane          10

    #.####   box power

     -26 -24 -22 -20 -18 -16 -14 -12 -10  -8  -6  -4  -2   0   2   4   6   8  10  12  14  16  18  20  22  24  26

   -14                                   0.3821  0.8650  0.7561  0.7557  0.8641  0.3815
   -12                       0.3844  1.0520  1.0026  1.2857  0.6512  1.2853  1.0009  1.0484  0.3839
   -10                   0.8729  1.0086  1.0497  0.6109  1.1332  1.1330  0.6104  1.0469  1.0072  0.8724
    -8               0.7642  1.2983  0.6147  1.0485  2.1921  2.1344  2.1925  1.0466  0.6144  1.2983  0.7642
    -6           0.7651  0.6585  1.1432  2.2041  1.2883  1.9844  1.9849  1.2899  2.2055  1.1437  0.6587  0.7654
    -4       0.8754  1.3012  1.1442  2.1493  1.9930  2.6982  2.8647  2.7025  1.9948  2.1509  1.1449  1.3017  0.8758
    -2   0.3861  1.0127  0.6167  2.2084  1.9953  2.8720  2.0356  2.0382  2.8750  1.9969  2.2096  0.6170  1.0132  0.3863
     0       1.0589  1.0563  1.0533  1.2944  2.7073  2.0396  0.9707  2.0405  2.7089  1.2951  1.0543  1.0570  1.0597
     2   0.3862  1.0128  0.6168  2.2091  1.9962  2.8744  2.0384  2.0367  2.8743  1.9973  2.2105  0.6173  1.0136  0.3865
     4       0.8756  1.3015  1.1446  2.1504  1.9947  2.7029  2.8662  2.7004  1.9951  2.1520  1.1458  1.3028  0.8765
     6           0.7652  0.6586  1.1435  2.2050  1.2900  1.9861  1.9858  1.2899  2.2075  1.1451  0.6596  0.7663
     8               0.7640  1.2978  0.6144  1.0472  2.1932  2.1360  2.1948  1.0496  0.6158  1.3011  0.7657
    10                   0.8722  1.0071  1.0470  0.6107  1.1339  1.1343  0.6118  1.0516  1.0105  0.8747
    12                       0.3838  1.0488  1.0014  1.2858  0.6518  1.2878  1.0041  1.0539  0.3853
    14                                   0.3816  0.8646  0.7564  0.7569  0.8663  0.3828

       Maximum Pos. Maximum Value
        (  6, -2 )   2.8750

我需要将这些六边形的数据提取到一个文件中，没有边界。你知道吗