1) Environmental data might be subject to minor adjustments due to ongoing audits and missing third-party data at the time of closing of this report. // 2) Severe upsets led to significant emergency flaring during shut-downs; further there was a lack of recycling capacity. // 3) The main reason for the increase is the integration of the plastics recycling company mtm plastics GmbH into the monthly group reporting definitions. // 4) Amounts from 2016-2019 have been restated due to reclassification.