READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 7745.376 4288.948 -1787.557 4.083990e-03 2.576599e-03 -1.833082e-03 0.274806 1.124586e-04 1.451835e-05 1.789008 4 0.187790 1669.861800 4.038151 2.227937