READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 35317.892 301.553 -189.878 1.057774e-02 6.678779e-03 -4.751514e-03 1.000000 3.881894e-04 8.094308e-05 1.364723 4 0.190768 491.430800 4.023727 2.226184