图66  大同-阳高地震前后三马坊测点地温观测结果

      ―― 为原始观测曲线；…… 为三次多项式拟合曲线；

      ― ・― ・― 为拟合残差曲线

Fig. 66  Curves of ground temperature value at Sanmafang

         observation point before and after the M6.1

         Datong-Yanggao earthquake