time(ms),val
0,-2
0.118,-2
0.118,-4
0.172625,-4
0.172625,-2
0.18475,-2
0.18475,-4
0.239375,-4
0.239375,-2
0.249875,-2
0.249875,-4
0.29525,-4
0.29525,-2
9.6195,-2
9.6195,-4
9.83825,-4
9.83825,-2
13.5,-2