(*1) Natural gas sold as domestic gas: Non-weighted average prices with PIS/COFINS and without ICMS.
(*2) Thermal - PTP Directive MME 215 from July 26th 2000 and Directive MME 234 from July 22nd 2002
(*3) Natural Gas sold as imported gas: Non-weighted average prices without PIS/COFINS and without ICMS.
(*4) Average monthly commercial dollar sales rate - PTAX SISBACEN