Table 2 The symmetric covariance matrix of parameters \(\beta\), \(c_0\), \(q_0\), \(\gamma _I\), \(\delta _{I_0}\), \(\delta _{q_0}\) and \(\gamma _H\) in Xi’an
\(\beta\) | \(c_0\) | \(q_0\) | \(\gamma _I\) | \(\delta _{I_0}\) | \(\delta _{q_0}\) | \(\gamma _H\) | |
|---|---|---|---|---|---|---|---|
\(\beta\) | 0.0005 | -0.1002 | 0.0005 | -0.0007 | 0.0007 | -0.0001 | -0.0000006 |
\(c_0\) | 40.3123 | -0.1610 | 0.2988 | -0.0092 | 0.1101 | -0.0016 | |
\(q_0\) | 0.0025 | -0.0019 | 0.0006 | -0.0027 | -0.000005 | ||
\(\gamma _I\) | 0.0036 | -0.0005 | 0.0008 | 0.000007 | |||
\(\delta _{I_0}\) | 0.0028 | 0.0005 | -0.00001 | ||||
\(\delta _{q_0}\) | 0.0076 | -0.00003 | |||||
\(\gamma _H\) | 0.00003 |