Region |-----------1959 - 1988 trends----------|
Trend N ( 95% CI ) Sign. Rel. Abu.
ARI 2.8 36 0.6 5.0 ** 6.55
CAL 5.2 73 1.0 9.3 ** 2.61
TEX 2.7 16 1.5 3.9 *** 0.41
SUR 3.1 138 1.2 5.1 *** 2.67