& useStevensNorth,useStevensSouth,
LOGICAL useStevensNorth
IF ( useStevensNorth ) THEN
IF (useStevensNorth.OR.useStevensSouth.OR.
IF ( tileHasOBN(bi,bj) .AND. useStevensNorth ) THEN
IF ( ( useStevensNorth.AND.useOrlanskiNorth )
useStevensNorth =.FALSE.
IF ( useStevensNorth .OR. useStevensSouth