CREATE TABLE table_16633 ("School" CLOB, "Location" CLOB, "Enrolment" FLOAT, "Founded" FLOAT, "Denomination" CLOB, "Day/Boarding" CLOB, "School Colours" CLOB, "Abbreviation" CLOB, "In competition since" FLOAT)

When was SPLC founded?
SELECT MIN("Founded") FROM table_16633 WHERE "Abbreviation" = 'SPLC'
SELECT MIN("Founded") FROM "table_16633" WHERE "Abbreviation" = 'SPLC'