Table 2.

Signal change rates in %/h, with the standard error in parentheses, for the regions of interest above and below the NMR coil were calculated assuming a linear time dependency.

	Juniper				Pinon
	Stage 1	Stage 2	Stage 3	Stage 4	Stage 1	Stage 2
Above	-26.1 (±1.4)	−2.2 (±0.1)	30.2 (±1.5)	2.9 (±0.4)	−1.3 (±0.1)	−0.6 (±0.1)
Below	−23.3 (±1.3)	−2.7 (±0.1)	35.1 (±2.6)	1.7 (±0.1)	−1.8 (±0.1)	−0.7 (±0.1)

The corresponding rates for the same branch are, for four of the six measurements, statistically different. This discrepancy is likely due to the roughness of the linear approximation as a measurement tool as much as it is due to biological variation in the regions of interest. By correlating the signal variation flow rates for the juniper were found to be 9.2 (±1.5) cm/h and 12.2 (±0.5) cm/h.