READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 20798.258 8245.049 -3533.057 2.398707e-02 6.115011e-03 -6.115011e-03 0.082171 3.184999e-04 4.974134e-05 1.479447 16 0.308250 967.817800 325.957019 3.922653