a19 4 1000 60000 a19.dat 16 10/uV 12 0 -302 11030 0 AECG1 a19.dat 16 10/uV 12 0 -216 -15012 0 AECG2 a19.dat 16 10/uV 12 0 -409 -7235 0 AECG3 a19.dat 16 10/uV 12 0 -436 14734 0 AECG4