Table schema:
CREATE TABLE table_name_81 (Id VARCHAR)

Question: Which 2011 is the lowest one that has a 1948 smaller than 15872624, and a 1966 of 263103, and a 1992 larger than 266308?
SQL: SELECT MIN(2011) FROM table_name_81 WHERE 1948 < 15872624 AND 1966 = 263103 AND 1992 > 266308