CREATE TABLE table_46607 ("Heat" FLOAT, "Lane" FLOAT, "Name" TEXT, "Country" TEXT, "Mark" TEXT, "React" FLOAT)

What is the heat number at 7.63, and a reaction less than 0.229?
SELECT COUNT("Heat") FROM table_46607 WHERE "Mark" = '7.63' AND "React" < '0.229'
SELECT COUNT("Heat") FROM "table_46607" WHERE "Mark" = '7.63' AND "React" < '0.229'