b68 4 1000 60000
b68.dat 16 2/uV 12 0 -111 -30880 0 AECG1
b68.dat 16 2/uV 12 0 508 11630 0 AECG2
b68.dat 16 2/uV 12 0 973 30988 0 AECG3
b68.dat 16 2/uV 12 0 864 -24669 0 AECG4