average
s
x
y
average
x
s
y
average
x
s
s
s
y
s
average
s
x
y
average
0
0
0
average
0
s
0
0
average
0
s
s
0
s
0
2.2
average
s
x
y
average
x
s
y
average
x
s
s
s
y
average
s
x
y
true
average
x
s
s
s
y
average
s
x
y
average
s
x
y
average
x
s
y
true
s
1
1
1
average
2
0
0
0
0
average
2
1
2
0
average
s
x
y
average
x
s
y
average
s
x
y
average
x
s
y
true
s
1
1
1
average
2
0
0
0
0
average
2
1
0
NaTT
certifiable-1.6