Low luminocity data form run 11007019.

st_physics_11007019_raw_1040001.daq
st_physics_11007019_raw_2020001.daq
st_physics_11007019_raw_3040001.daq
st_physics_11007019_raw_4040001.daq
st_physics_11007019_raw_5030001.daq
st_physics_11007019_raw_5040001.daq

Residuals are studied in four Z bins:

Black: 0<Z (cm)<50

Red: 50<Z(cm)<100

Blue: 100<Z(cm)<150

Green: 150<Z(cm)<200

From comparison of 0<Z (cm)<50 and 50<Z(cm)<100 bins below one can see 50 mkm difference in residuals magnitude. 

Other bins iz Z have small statistics thus results are less conclusive.

I will try to increase statistics by removing |eta|<1 pseudorapidity cut.