IRRIGATE	BLOCK	Y	X
1	1	1.5	45
1	2	3.1	58
1	3	3.8	61
1	4	3.3	59
2	1	1.9	54
2	2	1.8	57
2	3	2.9	55
2	4	2.3	56
3	1	1.1	43
3	2	1.8	60
3	3	3.7	71
3	4	1.8	48