Coming from zone 1:
 1,2,3,4,7	No restriction
 6,9		EL-low, but check limits
 8		AZ-low

Coming from zone 2:
 1,2,3		No restriction
 4,6,7,9	El-low,dont check limits, leave azimuth
 8		Determine the path (set el low and azimuth)

Coming from zone 3:
 1,2,3,6,9	No restriction
 4,7		EL-low, but check limits
 8		AZ-high
 
Coming from zone 4:
 1,4,7		No restriction
 2,3,8,9	AZ-low
 6		AZ-low, determine path
 
Coming from zone 6:
 3,6,9		No restriction
 1,2,7,8	AZ-high
 4		AZ-high, determine path
 
Coming from zone 7:
 1,4,7,8,9	No restriction
 3,6		EL-high, but check limits
 2		AZ-lo
 
Coming from zone 8:
 7,8,9		No restriction
 1,3,4,6	EL-high have to get out
 2		EL-high, check path
 
Coming from zone 9:
 3,6,7,8,9	No restriction
 1,4		EL-high, but check limits
 2		AZ-high