Enter initial latitude (1-80 deg; steps of 1):

Enter the initial size (in km; 100, ..., 900, 1000, ..., 9000, 10000, ...,100000):

Enter the initial field strength (1-100 kG; steps of 1) :

Enter the initial footpoint separation (0.10, 0.20, 0.25, 0.30, 0.40, 0.50, 0.60):
0.1 0.2 0.25 0.3 0.4 0.5 0.6
Enter Y if you wish to see the image (this will take approximately 5 minute):
Y N