Correlation between the primary incursions in the west and the east.

We combine the western and eastern sector in one sector and apply varying leads between -3 and 3 years. A positive lead (predicting the incursions in the east) clearly increases the correlation. A negative lead (predicting the incursions in the west) has no significant effect.我们将西部扇区与东部扇区合并为单一扇区，并配置取值区间为-3至3年的可变超前时滞（lead）。用于预测东部区域入侵事件的正超前时滞可显著提升相关性；而用于预测西部区域入侵事件的负超前时滞则未产生显著影响。