Describe the below table, discussion should allow the reader to understand what each portfolio represents, how RETp is calculated for different portfolios, in what way the portfolios overlap, and why the variance of RETp is different across portfolios.

RETp Return on Portfolio

PORTmkt is a market portfolio

Analysis Variable : RETp Return on Portfolio
portfolio	N Obs	N	Mean	Variance	Minimum	Median	Maximum
PORT05	60	60	0.0063873	0.0020312	-0.0894085	0.0080498	0.1513379
PORT10	60	60	0.0078698	0.0023396	-0.1099992	0.0071359	0.1439103
PORT30	60	60	0.0085982	0.0017767	-0.1230304	0.0058814	0.1195770
PORT50	60	60	0.0076024	0.0017500	-0.1188485	0.0104363	0.1128878
PORTmkt	60	60	0.0086639	0.0011960	-0.0898067	0.0118493	0.0882756