Question: Name the upper index kcal/nm3 for 62.47
Schema: create table table_1868929_1 (upper_index_kcal__nm_3 varchar, lower_index_mj__nm_3 varchar, PRIMARY KEY (upper_index_kcal__nm_3))
SQL: select upper_index_kcal__nm_3 from table_1868929_1 where lower_index_mj__nm_3 = "62.47"