CREATE TABLE table_22590 ("No. in series" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT)

Name the total number of series for march 19, 2000
SELECT COUNT("No. in series") FROM table_22590 WHERE "Original air date" = 'March 19, 2000'
SELECT COUNT("No. in series") FROM "table_22590" WHERE "Original air date" = 'March 19, 2000'