CREATE TABLE table_45959 ("Tournament" TEXT, "Surface" TEXT, "Week" TEXT, "Winner and score" TEXT, "Finalist" TEXT, "Semifinalists" TEXT)

What was the type of surface played on for the week of March 17?
SELECT "Surface" FROM table_45959 WHERE "Week" = 'march 17'
SELECT "Surface" FROM "table_45959" WHERE "Week" = 'march 17'