b83 4 1000 60000 b83.dat 16 2/uV 12 0 10 -23346 0 AECG1 b83.dat 16 2/uV 12 0 -56 -3798 0 AECG2 b83.dat 16 2/uV 12 0 -50 -19834 0 AECG3 b83.dat 16 2/uV 12 0 -107 -15421 0 AECG4