Question: What is the average upper index MJ/Nm 3 for the upper index Kcal/Nm 3 entry of 19376?
SQL: SELECT AVG("Upper index MJ/ Nm 3") FROM "2-1868929-1" WHERE "Upper index Kcal/ Nm 3" = 19376.0;

Question: What is the Upper index Kcal/ Nm 3 of iso-butane, and a Lower index MJ/ Nm 3 smaller than 84.71?
SQL: SELECT COUNT("Upper index Kcal/ Nm 3") FROM "2-1868929-1" WHERE "Fuel gas" = 'iso-butane' AND "Lower index MJ/ Nm 3" < 84.71;

Question: What is the Lower index Kcal/ Nm 3 entry, for the row with entries of an Upper index Kcal/ Nm 3 smaller than 19376, and a Lower index MJ/ Nm 3 of 74.54?
SQL: SELECT AVG("Lower index Kcal/ Nm 3") FROM "2-1868929-1" WHERE "Lower index MJ/ Nm 3" = 74.54 AND "Upper index Kcal/ Nm 3" < 19376.0;

Question: What is the entry for Upper index Kcal/ Nm 3 for the row with an entry that has a Lower index MJ/ Nm 3 of 47.91, and an Upper index MJ/ Nm 3 larger than 53.28?
SQL: SELECT SUM("Upper index Kcal/ Nm 3") FROM "2-1868929-1" WHERE "Lower index MJ/ Nm 3" = 47.91 AND "Upper index MJ/ Nm 3" > 53.28;

Question: What is the entry for Upper index Kcal/ Nm 3 for the row with an entry that has a Lower index MJ/ Nm 3 larger than 47.91, for Propylene, and an Upper index MJ/ Nm 3 larger than 77.04?
SQL: SELECT SUM("Upper index Kcal/ Nm 3") FROM "2-1868929-1" WHERE "Lower index MJ/ Nm 3" > 47.91 AND "Fuel gas" = 'Propylene' AND "Upper index MJ/ Nm 3" > 77.04;

Question: What is the entry for Lower index MJ/ Nm 3 for the row that has an Upper index Kcal/ Nm 3 larger than 19376, for LPG, and an Upper index MJ/ Nm 3 smaller than 86.84?
SQL: SELECT AVG("Lower index MJ/ Nm 3") FROM "2-1868929-1" WHERE "Upper index Kcal/ Nm 3" > 19376.0 AND "Fuel gas" = 'LPG' AND "Upper index MJ/ Nm 3" < 86.84;