Electron efficiency for each mirror - cut in central region

Figure: Short gas cherenkov detector efficiency for each mirror, from a high e run

The data quality for each mirror can be ordered as: #5$\rightarrow$ #4$\rightarrow$ #10$\rightarrow$ #6$\rightarrow$ #3$\rightarrow$ #8$\rightarrow$ #2$\rightarrow$ #9$\rightarrow$ #1$\rightarrow$ #7. Usually a cut at 380 (right above single photoelecton peak) is used. Compared to table , this is close to the order in number of photoelectrons:

Mirror#	$n_{ph.e.}$
5	6.98
4	6.94
6	6.63
10	6.61 3
8	6.00
9	5.16
2	5.01
7	4.35
1	3.56