Disks from one tree in the control and one tree in the thinned
plus biosolids treatments were lost so the data set is comprised of
46 trees. X-ray densitometry data ranged from rings 2 to 60; the
total number of rings was 2438, an average of 53 per tree disk. RSG
data for ring 1 was discarded since ring 1 data were missing for
some samples and exhibited extremely high RSG on others,
suggestive of compression wood. One tree had data for 14 rings
beyond ring 60 which were not included in analysis. Two
observations of LWSG and EWSG were missing and were treated
as missing data in modeling RSG.