"If we were to observe electron densities dropping to significantly less than their 15-day median all we could say was there was a 50 % likelihood of a magnitude 5 or greater quake somewhere in Taiwan over the next five days," says Kuo.
「如果我們觀測到某天的電離層濃度與前 15 天中位數濃度相較有明顯減少現象，大概只能說未來 5 天內、台灣地區約有 5 成機率會出現規模 5 以上的地震。