READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 20016.117 4820.097 -7274.026 2.990466e-03 1.742122e-03 -1.286734e-03 0.196121 2.031565e-04 1.729383e-05 1.569965 5 0.481868 2371.905800 3.748039 2.324074