READ TERR 1 2 READ SERR 4 !Time T_+ve T_-ve Rate Ratepos Rateneg FracExp BGrate BGerr CorrFact CtsInSrc BGInSrc Exposure Sigma SNR 56373.710 708.117 -580.635 4.398430e-03 2.845904e-03 -2.024674e-03 1.000000 2.195223e-04 3.015370e-05 1.525017 4 0.282910 1288.752200 3.652360 2.172414