Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_22545 ( "Fuel gas" text, "Upper index Kcal/ Nm 3" real, "Lower index Kcal/ Nm 3" real, "Upper index MJ/ Nm 3" text, "Lower index MJ/ Nm 3" text )

### Question ###
Name the upper index kcal/nm3 for 62.47

### Accurate SQL ###

SELECT "Upper index Kcal/ Nm 3" FROM table_22545 WHERE "Lower index MJ/ Nm 3" = '62.47'