1             0.                       :reference station number and x-coord.
100.          0.                       :station spacing and receiver depth
1   10   11   100         1. 0.        :shot 1 - r1 r2 r3 r4 s sdepth
2   11   12   101         2. 0.
3   12   13   102         3. 0.
4   13   14   103         4. 0.
5   14   15   104         5. 0.
6   15   16   105         6. 0.
7   16   17   106         7. 0.
8   17   18   107         8. 0.
9   18   19   108         9. 0.
10   19   20   109        10. 0.
11   20   21   110        11. 0.
12   21   22   111        12. 0.
13   22   23   112        13. 0.
14   23   24   113        14. 0.
15   24   25   114        15. 0.
16   25   26   115        16. 0.
17   26   27   116        17. 0.
18   27   28   117        18. 0.
19   28   29   118        19. 0.
20   29   30   119        20. 0.
