* The Corporate Carbon Footprint (CCF) was prepared in accordance with the guidelines of the Greenhouse Gas Protocol. It documents all emissions as CO2 equivalents. This means that, in addition to CO2, calculations also take into account the six other greenhouse gases regulated by the Kyoto Protocol: CH4, N2O, HFCs, PFCs, SF6 and NF3. These are converted to the global warming potential of CO2 and form CO2 equivalents (CO2e). However, we use the term CO2 for linguistic reasons.