Using Cosmic data from days 135 - 162 new TPC sector alignment has been done.
With the new alignment TPC drift velocities have been reproduced for days 66 - 169.
The comparison  of Drift velocities with Old (done in 2013) and New (2018) alignments has presented on the following plot.
1. I see that there is a difference in the drift velocities obtained with the different alignments. 
2. For the new alignment I see much smother dependence on time. 
3. To day (08/03/18) I will replace old drift velocities by new ones.