b93 4 1000 60000 b93.dat 16 2/uV 12 0 18 -1740 0 AECG1 b93.dat 16 2/uV 12 0 -1 7630 0 AECG2 b93.dat 16 2/uV 12 0 -14 -961 0 AECG3 b93.dat 16 2/uV 12 0 -5 -16893 0 AECG4