Table schema:
CREATE TABLE table_1868929_1 (upper_index_kcal__nm_3 VARCHAR, lower_index_mj__nm_3 VARCHAR)

Question:  Name the upper index kcal/nm3 for 62.47
SQL: SELECT upper_index_kcal__nm_3 FROM table_1868929_1 WHERE lower_index_mj__nm_3 = "62.47"