0    #integer nx = 0, 1, ..., 8   position in X
0    #integer ny = 0, 1, 2        top lione ny =0, t2b line ny = 1; brg line ny = 2
0.0  # double theta = 0, 90
0.0  # double phi = 0, 45, 90  at t2b line phi is also 315.0