READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 10044.996 12503.588 -3459.206 7.854225e-03 5.072344e-03 -3.608641e-03 0.058745 2.944570e-04 3.900179e-05 1.977751 4 0.276121 937.730200 3.676023 2.176505