# 01 statistical analysis of 2008 HV

Goal: study eta dependence of 2008 BTOW HV

# Fig 1 Eta-phi distribution of HV

```Formulas used to map tower ID in to eta-phi location
int id0=id-1;
int iwe=0; // West/East switch
if(id>2400) iwe=1;
int id0=id0%2400;
int iphi=id0/20;
int ieta=id0%20;
if(iwe==0) ieta=ieta+20;
else ieta=19-ieta;
```

# Fig 2 Batch 1, Eta-phi distribution of HV

```eta=0.05  mean HV=821 +/- 5  sigHV=60
eta=0.15  mean HV=820 +/- 5  sigHV=60
eta=0.25  mean HV=815 +/- 5  sigHV=62
eta=0.35  mean HV=811 +/- 5  sigHV=66
eta=0.45  mean HV=817 +/- 5  sigHV=66
eta=0.55  mean HV=820 +/- 5  sigHV=57
eta=0.65  mean HV=820 +/- 5  sigHV=59
eta=0.75  mean HV=806 +/- 5  sigHV=62
eta=0.85  mean HV=807 +/- 5  sigHV=58
eta=0.95  mean HV=829 +/- 5  sigHV=65```

# Fig 3 Batch 2, Eta-phi distribution of HV

```eta=0.05  mean HV=759 +/- 6  sigHV=56
eta=0.15  mean HV=760 +/- 7  sigHV=62
eta=0.25  mean HV=756 +/- 6  sigHV=53
eta=0.35  mean HV=763 +/- 6  sigHV=55
eta=0.45  mean HV=756 +/- 7  sigHV=58
eta=0.55  mean HV=760 +/- 6  sigHV=54
eta=0.65  mean HV=743 +/- 6  sigHV=52
eta=0.75  mean HV=754 +/- 6  sigHV=54
eta=0.85  mean HV=754 +/- 7  sigHV=64
eta=0.95  mean HV=769 +/- 7  sigHV=59```

# Fig 4 Batch 3, Eta-phi distribution of HV

```eta=-0.95  mean HV=730 +/- 4  sigHV=57
eta=-0.85  mean HV=723 +/- 4  sigHV=57
eta=-0.75  mean HV=727 +/- 4  sigHV=59
eta=-0.65  mean HV=718 +/- 4  sigHV=58
eta=-0.55  mean HV=723 +/- 4  sigHV=58
eta=-0.45  mean HV=720 +/- 4  sigHV=56
eta=-0.35  mean HV=727 +/- 4  sigHV=54
eta=-0.25  mean HV=724 +/- 4  sigHV=60
eta=-0.15  mean HV=735 +/- 4  sigHV=59
eta=-0.05  mean HV=729 +/- 4  sigHV=60```