<p>Note: Factor1, 2, 3, and 4 corresponds to the four components identified and presented in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0091528#pone-0091528-g006" target="_blank">Fig. 6</a>.</p><p><i>a</i> denotes the results of spatial error models, <i>b</i> denotes the results of spatial lag models.</p><p>WY: weighted mean of the dependent variable for adjacent sub-basins.</p><p>*indicates significant at <i>p</i><0.05.</p><p>**indicates significant at <i>p</i><0.01.</p
