BEAM test
GgLPNCId
1000	0				 source freq
5					 number of external layers
0 1500   0  0   0 1  0 		 first layer z cp cs ap as rho rough
0 1500   0  0   0 1  0 		 first layer z cp cs ap as rho rough
65 1500   0  0   0 1  0 		 first layer z cp cs ap as rho rough
100 1600  400  0.2 0.5 1.8 0		 first layer z cp cs ap as rho rough
120 1800  600  0.1 0.2 2.0 0 		 first layer z cp cs ap as rho rough

50 41 0.75 25. 4 100			 source: depth
50 125 51 25   				 receiv: first dp, last dp, ir intf
1500 -1500  				 velocities for inte
2048 1 1950                         cmin nwno icut1 icut2 for last bem run
-0.3 0.  20 0.05 			 xaxis 
20 80 12 10
50 125 12 25
24 54 6

 80 280 12 40  				 yaxis
1					 number of external layers
0 3000 1600   1  2.5 0.9 0 		 first layer z cp cs ap as rho rough