READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 3712.363 224.831 -138.732 8.342107e-02 2.176864e-02 -2.176864e-02 1.000000 4.346495e-04 2.985185e-05 2.043445 15 0.158022 363.562428 1367.544605 3.832167 4328.525 363.362 -391.332 7.194426e-02 1.402855e-02 -1.402855e-02 1.000000 4.661802e-04 2.145768e-05 2.037507 27 0.351823 754.693372 1645.561651 5.128419