Adjustment of heating values and C02 petrol and diesel

The activity data (i.e. the fuel sales per fuel type) are for the most part derived from the Energy Balance, as reported by Statistics Netherlands (CBS).
The emission factor is derived from the carbon content of the fuels.
Measurements by TNO in 2016 and RIVM in 2004 showed that these heating values, and also the carbon contents, have changed considerably during the past decades. This made it necessary to adjust the values used in the Dutch CO2 emission calculations.
The aim of this memo is to determine a consistent time series for 1990-2016 of heating values and CO2 emission factors for petrol and diesel fuel on the basis of these measurements.