options(digits=4)loop <- scan(file1, list(day=0, sec=0, offset=0, freq=0, tc=0))loop$offset <- loop$offset * 1e6str <- 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(loop$sec, loop$offset, type="l", xlab=paste("MJD", loop$day, "Time (s)"), ylab="PLL Offset (us)", ylim=c(-400, 400))