Expression. Need Help

[snarrp_Rocky]

ScenarioDateID	Portfolio	Total
20160701	A AUD OPT AU	-                  337,065
20160701	A CAD OPT AU	-                         229
20160701	A CPI OPT AU	-                   17,770
20160701	A CPI OPT2 AU	13,322
20160701 Total		-                  341,742
20160704	A AUD OPT AU	1,238,323
20160704	A CAD OPT AU	33
20160704	A CPI OPT AU	378,288
20160704	A CPI OPT2 AU	-                   98,216
20160704 Total		1,518,428
20160705	A AUD OPT AU	-                  130,404
20160705	A CAD OPT AU	1,625
20160705	A CPI OPT AU	56,491
20160705	A CPI OPT2 AU	-                  150,693
20160705 Total		-                  222,981
20160706	A AUD OPT AU	-                  529,386
20160706	A CAD OPT AU	1,113
20160706	A CPI OPT AU	-                     4,093
20160706	A CPI OPT2 AU	14,396
20160706 Total		-                  517,970

I have 4 dates, and each date has 4 portfolios, I need to total them by each date and out of that 4 dates total, I need to get 2nd lowest which is 341,712.

Kindly Help.

[sunny_talwar]

May be this

Min(Aggr(Sum(Value), ScenarioDateID), 2)