δ t 1

r t

δ t 2

δ t 3

δ t 1

2.1370e−08

1.3620e−08

7.8776e−08

−4.1885e−08

r t

1.3620e−08

3.9234e−08

1.6267e−08

3.9234e−08

δ t 2

7.8776e−08

1.6267e−08

0.0029

0.0019

δ t 3

−4.1887e−08

1.5296e−07

0.0019

0.0018