Question: What is the sum of 1938 values where 1933 values are under 68.3 and 1940 valures are under 4.02?
SQL: SELECT SUM("1938") FROM "2-1610496-2" WHERE "1933" < 68.3 AND "1940" < 4.02;

Question: What is the average 1940 value where 1929 values are 101.4 and 1933 values are over 68.3?
SQL: SELECT AVG("1940") FROM "2-1610496-2" WHERE "1929" = 101.4 AND "1933" > 68.3;

Question: What is the highest 1937 value that has a 1940 value over 126?
SQL: SELECT MAX("1937") FROM "2-1610496-2" WHERE "1940" > 126.0;