soil	field	distance	amount
moist	pasture	12	0.22
moist	pasture	22	0.11
moist	pasture	43	0.29
moist	pasture	23	0.33
moist	rape	32	0.19
moist	rape	67	0.39
moist	rape	54	0.18
moist	rape	NA	0.29
dry	pasture	11	1.16
dry	pasture	33	1.03
dry	pasture	45	1.11
dry	pasture	NA	1.33
dry	rape	55	1.02
dry	rape	41	1.23
dry	rape	14	1.05
dry	rape	27	1.12
