READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 3745.157 492.875 -344.563 3.495843e-02 7.422964e-03 -7.422964e-03 1.000000 4.923401e-04 7.106317e-05 1.296083 23 0.412304 837.438200 379.554903 4.709498