${\delta }_t^1$

$r_t$

${\delta }_t^2$

${\delta }_t^3$

${\delta }_t^1$

2.188e−08

1.389e−08

1.024e−07

−1.732e−09

$r_t$

1.389e−08

3.990e−08

1.689e−07

2.291e−07

${\delta }_t^2$

9.292e−08

1.459e−07

2.054e−03

1.851e−03

${\delta }_t^3$

−1.732e−09

2.291e−07

1.918e−03

1.753e−03