Table 2

Trend slopes (anomaly per year or per 35 years) for each PC region. Bold slopes are significant at the 5% significance level

Northern regionMiddle regionSouthern region
/yr/35 yr/yr/35 yr/yr/35 yr
Annual runoff 0.1 3.2 0.1 2.9 0.1
Warm-season runoff 0.1 2.9 0.1 3 − 0.5
Cold-season runoff 0.1 1.9 0.1 4 0.4
Northern regionMiddle regionSouthern region
/yr/35 yr/yr/35 yr/yr/35 yr
Annual runoff 0.1 3.2 0.1 2.9 0.1
Warm-season runoff 0.1 2.9 0.1 3 − 0.5
Cold-season runoff 0.1 1.9 0.1 4 0.4
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