a74 4 1000 60000
a74.dat 16 2/uV 12 0 -6 14249 0 AECG1
a74.dat 16 2/uV 12 0 55 19264 0 AECG2
a74.dat 16 2/uV 12 0 -27 23491 0 AECG3
a74.dat 16 2/uV 12 0 -33 -8903 0 AECG4