b27 4 1000 60000
b27.dat 16 2/uV 12 0 -1049 4802 0 AECG1
b27.dat 16 2/uV 12 0 -990 -2215 0 AECG2
b27.dat 16 2/uV 12 0 -500 -4336 0 AECG3
b27.dat 16 2/uV 12 0 -775 -30287 0 AECG4