Regression analysis of September 2010 and August 2011 indexes.

*All regressions were significant (p-value **All 2010 vs. 2011 slopes were significantly different (p-value Regression analysis of September 2010 and August 2011 indexes data with respect to “distance from the nearest oiled pixel” (n = 14,372).*所有回归分析结果均具有统计学显著性（p值**）；2010年与2011年的全部斜率均存在显著差异（p值）；本研究针对“距最近受油污染像素的距离”这一指标，对2010年9月及2011年8月的指数数据开展回归分析，样本量为14372。