(‘not satisfied’) to (‘very satisfied’)) 4.6 4.5 4.6 4.6 Average hours of training per employee 48.9 35.8 32.2 39.8 Number of non-conformities per hour of reference SPO 6 7.8 7.4 8.4 5.1 Global injury rate among Sonae Sierra workforce (direct employees and supervised workers) 2.37 2.89 5.79 3.27 Greenhouse gas (GHG) emissions of our owned portfolio and corporate offices (tCO2e/m2 GLA) 0.028 0.043 0.021 0.017 Electricity efficiency (excluding tenants) of our owned portfolio (kWh/m2 mall and toilet area) 514 479 444 435 Water efficiency (excluding tenants) of our owned portfolio (litres/visit) 3.7 3.6 3.7 3.5 Total waste recycled as a proportion of waste produced (% by weight, across our owned portfolio) 53 55 59 58 6 Safety, health and environment Preventive observations (SPO) are a form of safe behaviour audit undertaken at our shopping centres in operation.