| 233 | 
 and for each meridional position $j=1,\ldots,N_y$, a zonal index | 
 and for each meridional position $j=1,\ldots,N_y$, a zonal index | 
| 234 | 
 $i$ specifies the Eastern/Western OB position. | 
 $i$ specifies the Eastern/Western OB position. | 
| 235 | 
 For Northern/Southern OB this defines an $N_x$-dimensional | 
 For Northern/Southern OB this defines an $N_x$-dimensional | 
| 236 | 
 ``row'' array $\tt OB\_Jnorth(Ny)$ / $\tt OB\_Jsouth(Ny)$, | 
 ``row'' array $\tt OB\_Jnorth(Nx)$ / $\tt OB\_Jsouth(Nx)$, | 
| 237 | 
 and an $N_y$-dimenisonal  | 
 and an $N_y$-dimenisonal  | 
| 238 | 
 ``column'' array $\tt OB\_Ieast(Nx)$ / $\tt OB\_Iwest(Nx)$. | 
 ``column'' array $\tt OB\_Ieast(Ny)$ / $\tt OB\_Iwest(Ny)$. | 
| 239 | 
 Positions determined in this way allows Northern/Southern | 
 Positions determined in this way allows Northern/Southern | 
| 240 | 
 OBs to be at variable $j$ (or $y$) positions, and Eastern/Western | 
 OBs to be at variable $j$ (or $y$) positions, and Eastern/Western | 
| 241 | 
 OBs at variable $i$ (or $x$) positions. | 
 OBs at variable $i$ (or $x$) positions. |