说明：  我写的一个地震单台定位的程序，可以输入初至和P波和S波的到时差就可以计算出震中，然后输入台站的经纬度就可以得到震中的经纬度
(I wrote a single earthquake location procedures, may enter the beginning to and P-wave and S wave to the time difference can be calculated on the epicenter, and then enter the station s latitude and longitude can be the epicenter of the latitude and longitude)