a50 4 1000 60000
a50.dat 16 2/uV 12 0 -106 -12306 0 AECG1
a50.dat 16 2/uV 12 0 -68 -32499 0 AECG2
a50.dat 16 2/uV 12 0 -178 -13932 0 AECG3
a50.dat 16 2/uV 12 0 -158 30311 0 AECG4