Root Weighted Soil Moisture			Espm 129	Example
midpt
depth (cm)	Y	dY/dz	moisture	+(C*D)
0	0						beta = 0.95
5	0.226219063	0.226219	0.05	0.011311
15	0.53670877	0.31049	0.1	0.031049			Y=1-B^z
25	0.722610427	0.185902	0.25	0.046475
40	0.871487843	0.148877	0.4	0.059551
75	0.978656266	0.107168	0.4	0.042867
		sum	avg
		0.978656	0.24	0.191254
				wted avg
				0.195425