READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 175083.840 8783.926 -8710.023 3.816469e-03 1.693044e-03 -1.334393e-03 0.171129 2.552362e-04 1.713034e-05 1.578970 8 0.764105 2993.716200 4.774535 2.860079