soil.pH dieback
3.3	7.3
3.4	10.8
3.4	13.1
3.5	10.4
3.6	5.8
3.6	9.3
3.7	12.4
3.7	14.9
3.8	11.2
3.8	8
3.9	6.6
4	10
4.1	9.2
4.2	12.4
4.3	2.3
4.4	4.3
4.5	3
5	1.6
5.1	1