READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 2707.908 4787.474 -1022.470 6.328991e-03 2.539865e-03 -2.029486e-03 0.349558 2.854727e-04 2.673697e-05 1.526559 9 0.579770 2030.913000 155.067401 3.118519