parameter

observed

theoretical

${\Sigma }_{\min }\left(\text{pc}\right)$

1.42 × 10⁻²⁵

1.27 × 10⁻²¹

$\overline{\Sigma }\left(\text{pc}\right)$

1.13 × 10⁻¹⁸

1.13 × 10⁻¹⁸

${\Sigma }_{\max }\left(\text{pc}\right)$

4.34 × 10⁻¹⁷

6.17 × 10⁻¹⁷