Appendix 1—table 7. Linear regression results with NSP5 used as independent variable.

For more information about the variables involved (columns) consult Appendix 1—table 6 or Appendix 1 Section – Linear Regression Model.

Model	Slope (β )	Std.error ${\displaystyle \left({\sigma }_{\hat{\beta }}^2\right)}$	t-value	p-value	RSE	R-squared
${\displaystyle VP6={\beta }_{VP6}\times NSP5}$	1.273246	0.03278467	38.83663	1.364503 × 10−31	0.071	0.976
${\displaystyle VP4={\beta }_{VP4}\times NSP5}$	1.623226	0.05248750	30.92596	1.262448 × 10−19	0.093	0.977