What is Highest Days, when Launch Date is 23 January 2010?
CREATE TABLE "series_details" (
  "series" text,
  "host" text,
  "launch_date" text,
  "finale_date" text,
  "days" real,
  "winner" text,
  "prize" text
);
SELECT MAX("days") FROM "series_details" WHERE "launch_date"='23 january 2010';