itf <- scan(file1, list(day=0, sec=0, offset=0, stab=0))
str <- paste("eps/", file1, ".eps", sep="")
postscript(str,  ,  ,  , 5, pointsize=18)
par(mgp=c(1, 0, 0), tck=0.03, mar=c(2, 2, 1, 1))
plot(itf$sec, itf$offset, type="l", xlab=paste("MJD", itf$day, "Time (s)"), ylab="Internal Offset (ns)", ylim=c(-400, 400))