As of 1;00 PM Monday, 155 aftershocks measuring 4 or higher on the Richter scale had been monitored since the 8-magnitude earthquake that rocked southwest China's Sichuan Province on May 12, according to the China Seismological Bureau.

Quakes between 5 and 5.9 on the Richter scale numbered 24, while quakes above 6 on the Richter scale numbered 4.

(Xinhua News Agency May 19, 2008)