fromstart left right
0.0 1.2 1.2
780 2.15 2.15
1350 1.2 1.2
1750 2.15 2.15
2050 1.2 1.2
3000 2.15 2.15
3300 1.2 1.2
4000 2.15 2.15
4200 1.2 1.2