What is the amount of time (sum) at 40° that it takes a 16 lb shell to reach a maximum of no more than 22,000 ft?
CREATE TABLE "performance" (
  "m_v_ft_s" real,
  "shell_lb" real,
  "time_to_ft_m_at_25_seconds" text,
  "time_to_ft_m_at_40_seconds" real,
  "time_to_ft_m_at_55_seconds" real,
  "max_height_ft" real
);
SELECT COUNT("time_to_ft_m_at_40_seconds") FROM "performance" WHERE "shell_lb"=16 AND "max_height_ft"<'22,000';