t0 -- single droplet
2 100000 100001
9 60 1 2 200 1 2 1 0 180
4
2 -0.75 -0.5
2 -1250 -833
7 112 112 -2 -1 12 127 1
2 0. 0.
2 0 0
7 30 30 0 0 10 240 0
2 0. 0.
2 0 0
7 60 60 -10 -5 10 100 0
2 0. 0.
2 0 0
7 127 127 -5 0 50 127 0
