file in APEX.ave
find /sou
list
find /sou I17220
list
get f        #s t 1 2
plot
smooth
smooth
smooth       #可多次
plot
draw        #截取数据，按e退出
sic delete 1.txt
sic output 1.txt
for i a to b     #a and b channel number 从小到大，取整 低
say 'rx[i]+F0' 'ry[i]' /format f8.1 g12.4   #(F0 图上有，静止频率）
next
sic output
exit