Region |-----------1959 - 1988 trends----------|
Trend N ( 95% CI ) Sign. Rel. Abu.
ARI 3.4 34 -0.5 7.2 * 9.57
BC 3.4 20 0.3 6.5 ** 7.43
CAL 2.6 128 1.5 3.7 *** 18.34
COL 5.0 17 1.4 8.5 *** 2.02
NM 3.2 23 0.5 5.8 ** 7.65
ORE 0.8 35 -2.5 4.1 9.67
TEX 2.2 30 -2.0 6.5 1.87
UT -0.6 14 -9.3 8.1 6.80
WAS 4.5 27 2.6 6.4 *** 9.73
SUR 2.7 349 1.6 3.7 *** 7.30