CREATE TABLE table_68713 ("Rank" FLOAT, "Station" TEXT, "City" TEXT, "State" TEXT, "Boardings and deboardings" FLOAT)

In California what was the total rank at Irvine station when the number of boarding and deboardings was less than 683,626?
SELECT SUM("Rank") FROM table_68713 WHERE "Boardings and deboardings" < '683,626' AND "State" = 'california' AND "Station" = 'irvine station'
SELECT SUM("Rank") FROM "table_68713" WHERE "Boardings and deboardings" < '683,626' AND "State" = 'california' AND "Station" = 'irvine station'