READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 9760.266 5191.722 -1556.890 6.171749e-03 3.961318e-03 -2.818218e-03 0.144524 2.597260e-04 3.381345e-05 1.606499 4 0.253321 975.339700 3.759108 2.189947