READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 4140.395 6027.637 -1184.941 4.254909e-03 1.793364e-03 -1.413461e-03 0.387258 1.374751e-04 1.086836e-05 1.560468 8 0.383986 2793.132199 250.883502 3.010277