b85 4 1000 60000 b85.dat 16 2/uV 12 0 36 -19053 0 AECG1 b85.dat 16 2/uV 12 0 61 -18024 0 AECG2 b85.dat 16 2/uV 12 0 18 -13653 0 AECG3 b85.dat 16 2/uV 12 0 -20 -17700 0 AECG4