5300.0	x	S
5200.0	X	O	S
5100.0	X	O		S	x
5000.0	X	O	x		X	O
4900.0	X	O	X	O	X	O
4800.0	X	O	X	O	X	O
4700.0		O	X	o
4600.0		O	X			B
4500.0		O	X		B
4400.0		O	X	B
4300.0		O	B